Determining transaction to call dynamically

Dear Experts,

I am using MII 12.2.6 and inside a transaction I need to make a sub-transaction call. But the name of the sub-transaction including the path needs to be determined at run time. I could do this far, and I then assign the transaction name in the incoming parameters of the 'Transaction Call' or even 'Dynamic transaction Call' action block and pass the input parameters for this transaction. But when I execute the transaction, as the sub-transaction is dynamically determined, the input parameters are not recognized and the transaction throws an error for unrecognized parameter names.

Does any one know how the transaction name and corresponding parameters be determined/passes dynamically?

Any help will be appreciated.

Kind Regards,

Saumya