need help: how can I pass table field value to subreport?

I am using table and tableDataset in report, now I place subreport on table field row, hope subreport can get table field value as parameter to query data.

but I found subreport can only accept main report field/paramters,  not table fields/variables,

how to to resolve it ? 

if jasper do not support it, I have to give up table component, only use main report.

thanks!