I am using MS Version 10.0.

Could somebody please, help me to solve this? I believe that it is an system limitation.!! Easy to be implementated for futures software deliveries.
Well, I got an problem of how to set up a commission (%) based on profits instead of based on total value, as currently implemented at MS? I will try to give an example of this trick situation:

Initial equity: $1,000

Entry Commission : 0,015%

Exit Commission: 15%

Suppose that we are trading all initials $1,000 !

When the long position is entered, the 0.015% entry commission is subtracted from the $1,000 initial equity, allowing for a total investment of $999.85 The security's price then increases 10%, which creates $99.98 of profit (i.e., a 10% gain on the $999.85 invested). The exit commission of 15% (calculated only based on profits) is then subtracted from the $99.98 profit, leaving $84.98 of after-commission profits. The $84.98 profit is then added to the $999.85 equity, for a total equity of $1,084.83.

Thanks in advanced,
BigFish