Custom Friendly URLs

[Coroner]

I've tried to create my own friendly URL's but something goes wrong.
Created 2 plugins


Code:
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Code is only visible to licensed users, and only when logged into the forums.
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and the 2nd:


Code:
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Code is only visible to licensed users, and only when logged into the forums.
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Next is the part I can't ..... believe.
In class_friendly_url I've found the part:


Code:
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Code is only visible to licensed users, and only when logged into the forums.
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Now, when I add this code (hardcoded):


Code:
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Code is only visible to licensed users, and only when logged into the forums.
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to the class I works correctly. But when I'm adding this CODE by a plugin like:


Code:
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Code is only visible to licensed users, and only when logged into the forums.
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it doesn't work.
To test if it works I'm using this:


Code:
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Code is only visible to licensed users, and only when logged into the forums.
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Does anyone know, what I'm doing wrong ?

Cheers
Coroner