How to update date and status from SAP EM to TM?

Hi,

I have requirement to create a Function Module to update dates and status of events like PGI, POD from SAP EM to SAP TM. I am referring to standard function module in EM, /SAPTRX/TMS_CHANGE_EXEC_INF. How to run and this standard function module? Please let me know how to do the same?

With Regards

Gaurav