Unable to print BAQ Report by REST API

Thanks for your hint. But how can I provide this “Cur-TaskClientID” to the SysTaskParam table?

I read another article successfully print the BAQ report by REST after passing Cur-TaskClientID to BAQReport Param. (Printing from a uBAQ called via REST fails - #4 by hkeric.wci) I tried but no luck, and I cannot find this parameter from BAQReportParam in the REST API help page too. Is there any more hint to do so? Thank you very much.