[Babul]

you want to get the state when croching? thats already built-in:
https://sampwiki.blast.hk/wiki/GetPlayerSpecialAction
pay attention to the https://sampwiki.blast.hk/wiki/SpecialActions ...

Code:

1 - SPECIAL_ACTION_DUCK *             - Detect if the player is crouching.
Notes (*) These Special Actions cannot be set.