How to place orders directly from Scanner?

I would like to place order from the Scanner using indicators.

Is it possible to write and apply an indicator to the Scanner like:

if marketposition=0 then
send order;

if marketposition<>0 then
exit order;

To do this, I think it is necessary somehow to find out the I_MarketPosition value but MC currently does not support I_xxx functions.

Can someone shed light on me please?
Using built-in or external dll would be ok if I can send out orders from the Scanner.