I'm working on a PCF for finding flat top setups.  End goal is to have a PCF that I can use as a scanner to find stocks that have 3 or more EQUAL or NEARLY EQUAL tops.

So I'm starting with simply current high is equal to a previous high

(H = H1)

or

(H = H2)

But I'd like to give a little more flexibilitiy to cast a wider net. 

Is there a way I can say current high is within 2 cents of previous high?

(H = H1 + .01) or (H = H1 +.02)

That type of formual doesn't seem to work...is there anything I could do that might work better to achieve a similar end result?

Any other ideas would be welcome!

You could use something like the following.

ABS(H - H1) <= .02

PCF Formula Descriptions
Handy PCF example formulas to help you learn the syntax of PCFs!