How to access global function in template?

[ShinyChang]

I read "Local helper variables" and test the code by print().

But it does not working with global object function...

sample code

Have any idea?

btw:
I know I can change raw data before using template, but i just want know can template do it?

[ShinyChang]

Sorry, my mistake.
It work fine.

:(

sample (updated)