Unable to open GP task from email

Hi,

We have migrated GP7.0 application into GP7.3 and we are using sy.workitemurl to send the current workitem url through email, but it(sy.workitemurl) generating wrong url due to which we are unable to open the GP wotkitem from email link, getting workitem can not be processed error.

Below is the link generated by sy.workitemurl

http://host:port/irj/portal?NavigationTarget=ROLES://portal_content/com.sap.pct/platform_add_ons/com.sap.caf.eu.gp.folders.gp/com.sap.caf.eu.gp.roles.runtime/com.sap.caf.eu.gp.worksets.runtime/com.sap.caf.eu.gp.pages.procinstance2&DynamicParameter=processId=26a227&taskId=

Can any one help me out on this.

Thanks,

Suresh