"Something" needed to close only long or only short positions or both generated by an EA

Hi,

i have an EA in place (which cannot be modified), that opens long and short positions. So we may have one long position and two short positions at the same time.

I want to have "something" (indicator, script?) where i can close only the short positions OR the long positions OR all positions.

If possible, instead of having manually closing the positions by hitting a button or using a hotkey, is it possible to close all longs or short position when a defined Level is reached? This Level should be adjusted by a Line in the chart.

Pls respond if you only develop "something" or if you are able to program a line where the shorts or the long positions will be closed.

Thanks

Artnaf