Extends Freemarker variables for custom theme

[echino]

Hi there!

I'm currently in the making of a custom theme for our multi-tenant saas and I'm trying to inject some variables.

Is there any possiblities for us to assign / declare a variable in order to if statement to work on a custom variable?

I saw a post of someone talking about "assign" in freemarker but without exemple nor documentation.

And at the beginning of ftl files we have

[#-- @ftlvariable name="version" type="java.lang.String" --]

and I was wondering if I could add another one.
I can't use application theming because of the architecture and we want a generic template of all of our customer. I already achieved color, logo and name customization via JS but it would be so much prettier to have a way in FTL.

Thanks in advance!

[echino]

I found that you can use GET parameters directly inside FTL which works perfectly

request.getParameter("param")