custom bb codes

[avio]

question, i'm trying to add a new custom bb code for different sort of links... the problem i'm getting is that when i test it out in the admin cp, the code works fine, same as the link code, but when i test it out in the forums, the link is all changed when posted

for e.g link is "fdsgdfgsd:2443:A(BUQA5QAMUAC_).4ACTABUAA2<>IAOQAC 4ABN&dn=whatevedfjshdofsduofwieruoiwdlskjfdf"

the link automatically changes and adds spaces and other stuff to itself when posted in vbulletin, but it works perfectly fine in admincp.

it removes and add stuff to the link when posted on the boards, but it works fine in admincp, how can i get it to function just like it does in the admincp and not parse out and add stuff to it??

I don't know how to explain it