workflow or REST API call or Qcommands to delete client VM client and Agent base client

I want to automate deletion of client which is already retired, please assist with correct article.

I used below ,

<App_DeleteClientRequest>

<association>

<entity>

                                             <clientName>xpath:{/workflow/ProcessBlock_6/pb_client}</clientName>

</entity>

</association>

</App_DeleteClientRequest>

but gets below error.

Delete client automation , automatically evokes DeleteClientAuthorization, not sure what to do here.

Error Code: [19:857]
Description: startup failed: Script1.groovy: 7: Unexpected input: '{ timeout = v_26695f15_7028_414d_a7c7_a074e9e7358f * 1440*60; //Convert timeout in days to unix time workflow.setVariable("VAR_TIMEOUT",timeout); } else { workflow.setVariable("VAR_TIMEOUT",14400*60); //If timeout is not set in configuration, set default timeout as 10 days and converting it to unix time }' @ line 7, column 371. d converting it to unix time } ^ 1 error
Source: ap1smacvcmc002, Process: Workflow