Using existing variables in different templates

[Thr33]

Ive been looking through manuals and i just cant get my head around using pre-existing raw variables in different templates. Im rather new to the coding arena of vBulletin and this issue keeps blocking me from modifying templates.

Example:
In the header template we have

{vb:raw pmbox.lastvisitdate}, {vb:raw pmbox.lastvisittime}

Now if i wanted to put this data in FORUMHOME template instead i cant seem to do it, even if i change the raw to a var, it simply wont display anything. Ive heard a lot about declaring variables but with the root "pmbox." i assumed it would still display as its makes it globally accessible.

Any help?