Question about cop missions in GTA4

[Germtop]

Hi, I hope it's OK to post this kind of question here. If not, my apologies to all.

After I did the hit job for Brucie he call me to tell me that I should do that more often, meaning steal a police car to whack people for money.

I did just that, I stole a squad car, then looked up the "Most Wanted" list and clipped them but never got any money.

I also checked Brucie's options on my cell phone while I was on the car to see if a hit job would appear but there was nothing.

Am I missing something?

Thanks everybody.