I'm trying to use the data shaping command. I combine APPEND and COMPUTE in order to do grouping of the child table. It works ok unless I pass a parameter from parent table to the child table.

For Example:

SHAPE {SELECT ParentTable.* FROM ParentTable} AS Command1 APPEND (( SHAPE {select *, ? as newField from ChildTable} AS Command2 COMPUTE Command2 BY 'ChildField1') AS Command2_Grouping RELATE 'ParentField1' TO PARAMETER 0,'ParentField2' TO 'ChildField2') AS Command2_Grouping"