Custom SAP Script in MIGO not displaying data

Dear All,

    I have copied SAP Standard Script "WESCHEINVERS3" into Z_Script to print a Barcode. I have copied the Program SAPM07DR into ZMMSAPM07DR Program, Now from MIGO Output Types the form is displaying with empty value, but the internal table holds value in Write Form of my ZMMSAPM07DR.

When I'm executing the same Script from Driver Program then the form displaying with data.

Could some let me know the possible cause of error.

Thank You