Make selfcal_strategy default work?

workflows/linc_target/gsmcal.cwl

@@ -81,7 +81,7 @@ inputs:
   - id: selfcal_region
     type: File?
   - id: selfcal_strategy
-    type: string
+    type: string?
     default: 'HBA'
 outputs:
   - id: msout
@@ -631,9 +631,11 @@ steps:
         source: findRefAnt_join/refant
       - id: prefix
         default: ph_
+      - id: selfcal_strategy
+        source: selfcal_strategy
       - id: execute
         source: selfcal
-        valueFrom: '$(self ? false : true)'
+        valueFrom: '$(self ? (false || inputs.selfcal_strategy == "HBA") : true)'
     out:
       - id: output_plots
       - id: logfile