TruClient - Dynamic transaction

Hello,

I am trying to use the dynamic transaction name, whatever is given in the TruClient example is not working.  I tried to used the below options in the Javascript argument.

TC.startTransaction(“CCP_PUMBS_10S10P_Pricechange” + TC.getParam("Trans"));

TC.startTransaction(“CCP_PUMBS_10S10P_Pricechange” + ArgsContext.TC.getParam("Trans"));

Then i tried to save the param value in a variable and tried to use, that also didnt worked.

var a = LR.getParam('Trans');

TC.startTransaction(“CCP_PUMBS_10S10P_Pricechange” + a);

Request anyone who did dynamic transaction to help out to solve this issue.