How to scan by particular indicator?

[mnasiru]

Dear all good day. hope u all r fine and doing well.
i m from bangladesh. i m learning TA and using AB.
Is there any means to know the time of cross over a particular indicator to its signal line by a command scan? For example, Trix is going up and crossing O line. By this i can see how many scripts have the crossing of 0 line by trix.
thanks and regards.

 

[johnnypareek]

here it is:-

t=trix();
buy=cross(t,0);
sell=cross(0,t);

 

[mnasiru]

Dear brother. pl reply the PM.
REGARDS.