HMA Alert EA?

I want to use the HMA as calculated in this correctly done
MLaden HMA Histo bar and have a very simple ea created..
or indicator if it could be done in just an indicator..
Basically set for example 20 and 50 HMA type 3
price 0... when either one changes color to agree
with the other (only on candle CLOSE!) we can get
pop up alert with alarm. Prefer option arrows on chart
and able to turn alarm on and off but.. pretty basic...ie
50 has been long and 20 changes to agree with it again..
we get alert
Long signal 20 HMA agrees with 50 HMA on X Pair
at X time

same thing if 50 changes to agree with 20 HMA..20 HMA
has been short, now 50 HMA agrees
Short signal 50 HMA agrees with 20 HMA on X Pair
at x time.

And really important, no alerts till end of bar.

Can someone help??

Would be so wonderful

Brian