i want to write a new indicator like such

if macd > avg(macd>0) or macd < avg(macd<0) anyhelp would be nice

That would depend entirely on your settings. The Understanding MACD topic explores the creation of Personal Criteria Formulas for MACD and MACD Histogram indicators.

If you are talking about an Exponential MACD 12,26,9 and I'm understanding the request correctly (which is not guaranteed), a Condition Formula for macd > avg(macd>0) could be written as:

XAVGC12 - XAVGC26 > XAVG(XAVGC12,9) - XAVG(XAVGC26,9) AND XAVG(XAVGC12,9) > XAVG(XAVGC26,9)

While macd < avg(macd<0) could be written as:

XAVGC12 - XAVGC26 < XAVG(XAVGC12,9) - XAVG(XAVGC26,9) AND XAVG(XAVGC12,9) < XAVG(XAVGC26,9)

so xave refers to exp moving averaged?  nice ok... so then you written the macd here usind the closing price... i see... this is very helpful thanks

Yes, the XAVG refers to an exponential moving average. If you wanted to use simple moving averages instead, you could replace all instances of XAVG with AVG.

i want to set an average of the simple macd(5,10,10) > 0 over 1 yr and show a watch list where the simple macd(5,10,10) is greater then that average.

sorry simple macd(5,10) ... duh

A Condition Formula for a Simple MACD 5,10 being greater than its 252-period simple moving average could be written as:

AVGC5 - AVGC10 > AVG(AVGC5,252) - AVG(AVGC10,252)