Fix MS output name

steps/preprocess.cwl

@@ -21,6 +21,9 @@ arguments:
   - memory_logging=true
 
 inputs:
+  - id: sasid
+    type: string?
+    doc: SAS process identifier
   - id: msin
     type: Directory
     inputBinding:

workflows/pipeline.cwl

@@ -112,6 +112,8 @@ steps:
     scatterMethod: dotproduct
     run: ../steps/preprocess.cwl
     in:
+      - id: sasid
+        source: sasid
       - id: msin
         source: msin
       - id: msin_autoweight
@@ -151,10 +153,8 @@ steps:
       - id: dysco_weightbitrate
         source: dysco_weightbitrate
       - id: msout_name
-        source:
-          - sasid
-          - msin
-        valueFrom: $("L" + self[0] + self[1].basename.slice(7))
+        source: msin
+        valueFrom: $("L" + inputs.sasid + self.basename.slice(7))
       - id: dp3_checkparset
         source: dp3_checkparset
       - id: dp3_numthreads
@@ -165,4 +165,3 @@ requirements:
   - class: InlineJavascriptRequirement
   - class: ScatterFeatureRequirement
   - class: StepInputExpressionRequirement
-  - class: MultipleInputFeatureRequirement