Merge Field (##) Problem when sending email via workflow

Hi All,

I got a problem with sending email via workflow where merge field is not translate to actual value.

Example:

What I expected - #comp_name#--> "My Company"

Actual Result - #comp_name#-->"#comp_name#"

The biggest problem is that it happen to certain flow only while other flow work properly. I have try to create new flow to substitude the problem one but same problem still occur while other flows are working fine.

Best Regards,

Natha