variable in template and subtemplate

[erosmembers]

Can I define a new variable "xyz" in template to use this new "xyz" in subtemplate?

[admin]

Take a look at custom tags

admin/?operation=rotation&sub=rot_tube&subsub=rot_cms_custom_vars&

[erosmembers]

How can I set e.g. <!--CUSTOM_VAR_SID--> in template with a value?
I did not find this in forum and not in Wiki.

[admin]

You have to create SID var in admin aтв assign a value to it, and then use <!--CUSTOM_VAR_SID--> in template.

[erosmembers]

I have seen the definition.
But I need a variable that I can change.
I would like to store e.g. a sourceid at runtime.

[admin]

Yes, you can change that variable in admin area