Hi Trey,
Try below points:
1. In crystal you have to convert string to number i.e For example
If NumericText ({table.field}) Then
ToNumber ({table.field}) else 0
OR
In the sub-report
IncentiveVariable:
WhilePrintingRecords;
Shared StringVar Incentives := cdbl({rpt_EquipmentMaster.Description})
In the main report
IncentiveVariable:
WhilePrintingRecords;
Shared StringVar Incentives;
2. Follow this link:
Passing Subreport Value to Main Report - Stack Overflow
Regards,
DJ