Thanks to all for your very helpful responses.

My intention was to fill in a template by diiferent hash tables since my template will be big with a lot of variables to be defined. It looks like that I have no choice but just fill-in the template after collected all the varaibles in one shoot.

I really hope that the Text::Template could allow people to save previous filled-in data, i.e. do accumulation and also allow people to "refresh" if needed. This may not make sense?

Regards
Taizi