Please help code an EMA Crossover 12ema x 24 ema cross

Hi I was wondering if someone would be so kind to write me an ea alert as follows:

EA 1

12ema x 24 ema cross thru..above/below upon close this way you get the cross for the upper/lower cross and it wont signal ya till the next candle has opened below the cross

Ea 2

Same as above but insteas of 12 ema and 24 ema, I need a 8 ema and 12 ema cross alert

Thank you ever so kindly

Try this...this has a different value, but you can always edit the values as per your requirements.

Cheers
Vicky