diff --git a/Configurations/RTApp-Isttok-File.cfg b/Configurations/RTApp-Isttok-File.cfg
index 6378051..1a9f6a4 100644
--- a/Configurations/RTApp-Isttok-File.cfg
+++ b/Configurations/RTApp-Isttok-File.cfg
@@ -89,16 +89,6 @@
                 Mode = ExpectsReply
                 Function = "Start"
             }
-            +OpenTreeMsg = {
-                Class = Message
-                Destination = "MdsLoopApp.Data.MDSWriter"
-                Function = OpenTree
-                Mode = ExpectsReply
-                +Parameters = {
-                    Class = ConfigurationDatabase
-                    param1 = 1
-                }
-            }
             +ChangeToStateIdleMsg = {
                 Class = Message
                 Destination = MdsLoopApp
@@ -243,6 +233,20 @@
         }   
     }
 }
++Types = {
+    Class = ReferenceContainer
+    +LangmuirStructure = {
+        Class = IntrospectionStructure
+        TimeSdas = {
+            Type = uint32
+            NumberOfElements = 1
+        } 
+        SignalArray = {
+            Type = float32
+            NumberOfElements = 4
+        } 
+    }
+}
 $MdsLoopApp = {
     Class = RealTimeApplication
     +Functions = {
@@ -314,7 +318,7 @@ $MdsLoopApp = {
                 }
             }
             OutputSignals = {
-                TimeSdas = {
+                TimeSdasA = {
                     DataSource = "DDB1"
                     Type = uint32
                 }
@@ -336,41 +340,75 @@ $MdsLoopApp = {
                 }
             }
         }
+        +GAMFileReaderS = {
+            Class = IOGAM
+            InputSignals = {
+                Inputs = {
+                    DataSource = FileReaderS_DS
+                    Type = LangmuirStructure 
+                    MemberAliases = {
+                        Inputs.TimeSdas = TimeSdas
+                        Inputs.SignalArray = LangmuirSignals
+                    }
+                }
+            } 
+            OutputSignals = {
+                LangmuirStrt = {
+                    DataSource = DDB1
+                    Type = LangmuirStructure
+                    MemberAliases = {
+                        TimeSdasA = "LangmuirStrt.TimeSdas"
+                        LangmuirSignalsA = "LangmuirStrt.SignalArray" 
+                    }
+                }
+            }
+        }
+        +FlatIOGAM = {
+            Class = FlattenedStructIOGAM
+                InputSignals = {
+                    LangmuirStrt = { //Exactly one structure signal shall be defined.
+                        Type = LangmuirStructure //The Type shall be structured and is required.
+                        DataSource = DDB1 //Compulsory.
+                    } 
+                }
+            OutputSignals = {
+                LangmuirStrt_TimeSdas = {
+                    Type = uint32
+                    NumberOfElements = 1
+                }
+                LangmuirStrt_SignalArray = {
+                    Type = float32
+                    NumberOfElements = 4
+                }
+            }
+        }
+
         /*
-                Langmuir0 = {
-                    DataSource = "DDB1"
-                    Type = float32
+        +GAMFileReaderS = {
+            Class = IOGAM
+            InputSignals = {
+                TimeSdas = {
+                    DataSource = FileReaderS_DS
+                    Type = uint32
                 }
-                Langmuir1 = {
-                    DataSource = "DDB1"
+                LangmuirSignals = {
+                    DataSource = FileReaderS_DS
                     Type = float32
+                    NumberOfElements = 4
                 }
-                Langmuir2 = {
+            }
+            OutputSignals = {
+                TimeSdasS = {
                     DataSource = "DDB1"
-                    Type = float32
-                }
-                Langmuir3 = {
-                    DataSource = "DDB1"
-                    Type = float32
+                    Type = uint32
                 }
                 LangmuirS = {
                     DataSource = "DDB1"
                     Type = float32
                     NumberOfElements = 4
-                    Ranges = {{1,1}}
-                }
-                LangmuirS = {
-                    DataSource = "DDB1"
-                    Type = float32
-                    NumberOfElements = 4
-                    Ranges = {{2,2}}
-                }
-                LangmuirS = {
-                    DataSource = "DDB1"
-                    Type = float32
-                    NumberOfElements = 4
-                    Ranges = {{3,3}}
                 }
+            }
+        }
                 OutMdsW1 = {
                     DataSource = FileSignalsWriter
                     Type = float32
@@ -384,49 +422,39 @@ $MdsLoopApp = {
                     Type = float32
                 }
         */
-        +GAMSignalsWriter = {
+        +GAMFileWriter = {
             Class = IOGAM
             InputSignals = {
                 Time = {
                     DataSource = "DDB1"
                     Type = uint32
                 }
-                Langmuir0 = {
-                    DataSource = "DDB1"
-                    Type = float32
-                }
-                Langmuir1 = {
-                    DataSource = "DDB1"
-                    Type = float32
-                }
-                Langmuir2 = {
-                    DataSource = "DDB1"
-                    Type = float32
-                }
-                Langmuir3 = {
+                //"LangmuirStrt.SignalsL[0]" = {
+                LangmuirStrt_SignalArray = {
                     DataSource = "DDB1"
                     Type = float32
+                    NumberOfElements = 4
                 }
             }
             OutputSignals = {
                 Time = {
-                    DataSource = FileSignalsWriter
+                    DataSource = FileWriter_DS
                     Type = uint32
                 }
                 OutMdsW0 = {
-                    DataSource = FileSignalsWriter
+                    DataSource = FileWriter_DS
                     Type = float32
                 }
                 OutMdsW1 = {
-                    DataSource = FileSignalsWriter
+                    DataSource = FileWriter_DS
                     Type = float32
                 }
                 OutMdsW2 = {
-                    DataSource = FileSignalsWriter
+                    DataSource = FileWriter_DS
                     Type = float32
                 }
                 OutMdsW3 = {
-                    DataSource = FileSignalsWriter
+                    DataSource = FileWriter_DS
                     Type = float32
                 }
             }
@@ -466,46 +494,6 @@ $MdsLoopApp = {
                 }
             }
         }
-        +GAMMDSWriter = {
-            Class = IOGAM
-            InputSignals = {
-                Langmuir0 = {
-                    DataSource = "DDB1"
-                    Type = float32
-                }
-                Langmuir1 = {
-                    DataSource = "DDB1"
-                    Type = float32
-                }
-                Langmuir2 = {
-                        DataSource = "DDB1"
-                        Type = float64
-                }
-                CycleTime = {
-                    DataSource = Timings
-                    Alias = Idle.Thread1_CycleTime
-                    Type = uint32
-                }
-            }
-            OutputSignals = {
-                OutMdsW0 = {
-                    DataSource = MDSWriter
-                    Type = float32
-                }
-                OutMdsW1 = {
-                    DataSource = MDSWriter
-                    Type = float32
-                }
-                OutMdsW2 = {
-                    DataSource = MDSWriter
-                    Type = float64
-                }
-                CycleTime = {
-                    DataSource = MDSWriter
-                    Type = uint32
-                }
-            }
-        }
     }
     +Data = {
         Class = ReferenceContainer
@@ -542,7 +530,17 @@ $MdsLoopApp = {
             EOF = "Last"  // "Rewind"
         }
 
-        +FileSignalsWriter = {
+        +FileReaderS_DS = {
+            Class = FileDataSource::FileReader
+            Filename = "../Analysis/LangmuirSdas_46241_strt.csv" 
+            FileFormat = "csv"
+            CSVSeparator = ","
+            Interpolate = "no"
+            Preload = "yes" //Optional
+            EOF = "Last"  // "Rewind"
+        }
+
+        +FileWriter_DS = {
             Class = FileDataSource::FileWriter
             NumberOfBuffers = 10000
             CPUMask = 1 
@@ -571,43 +569,6 @@ $MdsLoopApp = {
             }
         }
 
-        +MDSWriter = {
-            Class = MDSWriter
-            NumberOfBuffers = 10 //Compulsory. Number of buffers in the circular buffer defined above. Each buffer is capable of holding a copy of all the DataSourceI signals.
-            CPUMask = 2 //Compulsory. Affinity assigned to the threads responsible for asynchronously flush data into the MDSplus database.
-            StackSize = 10000000 //Compulsory. Stack size of the thread above.
-            TreeName = "isttokoutput" //Compulsory. Name of the MDSplus tree.
-            PulseNumber = 1 //Optional. If -1 a new pulse will be created and the MDSplus pulse number incremented.
-            StoreOnTrigger = 0 //Compulsory. If 0 all the data in the circular buffer is continuously stored. If 1 data is stored when the Trigger signal is 1 (see below).
-            EventName = "updatejScope" //Compulsory. Event sent to jScope when TimeRefresh seconds have elapsed.
-            TimeRefresh = 5 //Compulsory. An event with the name set in the property EventName is sent to jScope when TimeRefresh seconds have elapsed.
-            Signals = {
-                OutMdsW0 = { //As many as required.
-                    NodeName = "\TOP.OUT.OUT0" // node of the tree node
-                    Period = 0.0001 //Compulsory. Period between signal samples.
-                    AutomaticSegmentation = 0
-                    MakeSegmentAfterNWrites = 100
-                }
-                OutMdsW1 = { //As many as required.
-                    NodeName = "\TOP.OUT.OUT1"
-                    Period = 0.0001
-                    AutomaticSegmentation = 1
-                    // MakeSegmentAfterNWrites = 100
-                }
-                OutMdsW2 = {
-                    NodeName = "\TOP.OUT.OUT2"
-                    Period = 0.0001
-                    AutomaticSegmentation = 0
-                    MakeSegmentAfterNWrites = 100
-                }
-                CycleTime = { //As many as required.
-                    NodeName = "\TOP.OUT.Cycle_Time" // node of the tree node
-                    Period = 0.0001
-                    AutomaticSegmentation = 0
-                    MakeSegmentAfterNWrites = 100
-                }
-            }
-        }
     }
     +States = {
         Class = ReferenceContainer
@@ -629,7 +590,7 @@ $MdsLoopApp = {
                 +Thread1 = {
                     Class = RealTimeThread
                     CPUs = 0x1
-                    Functions = {GAMTimer GAMFileReader GAMElectricProbes GAMSignalsWriter GAMMDSWriter}
+                    Functions = {GAMTimer GAMFileReader GAMFileReaderS FlatIOGAM GAMElectricProbes GAMFileWriter }
                 }
             }
         }