Variable usable across templates

[Arty]

I'm trying to set custom variable in a template that could be used later in another template. <xen:set> doesn't work, variable seems to be available only within template it was defined in.

Are there any solutions that don't require creating add-on?

Example: if I add this to node_forum_level_2 template

Old value = {$testVar}
<xen:set var="$testVar">test</xen:set>
New value = {$testVar}

old value is always empty, even though template is shown many times on same page.

 

[Jake Bunce]

Available vars are explicitly defined for templates. See this thread for that specific template:

http://xenforo.com/community/threads/contenttemplate-not-evaled-in-node_forum_level_2.29522/