How to include ftl from another module using a variable?

[Michael Brohl]

Hi,

I want to include a freemarker template using the <#include /> 
directive from another module.
The template path is given to the including ftl (in module1) through a
screen variable in the form "component://module2/path/to/ftl/name.ftl".
The variable is named "myTemplate".

Code
..
<#include myTemplate>
..

Freemarker cannot find the template because is searches for
"component://module1/includes/component://module2/path/to/ftl/name.ftl".
Is there a way to avoid that "component://module1/includes/" is used as
the base?

I tried
..
<#include "/" + myTemplate>
..

to give Freemarker a hint for an absolute path but it says

Error rendering included template at location
[component://module1/includes/header.ftl]:
java.lang.IllegalArgumentException: Bad component location
[component://component://module2/path/to/ftl/name.ftl]: base location
missing slashes [/component://module2/path/to/ftl/name.ftl], first=0,
second=-1; should be like: component://{component-name}/relative/path

Any hints?

Thanks and regards,

Michael