% of account

[SShui]

I have been searching but I cant find the answer

I want the BUY or SELL to calculate X% of my account.

For example risk is set to 5%

the pips between BUY and SL is 100 pips and the trade will open with a auto calcualted lot

so if the trade was to hit the SL - I would only lose 5% of my account

hope this makes sense

I tried Risk % of Balance (Volume size depending on Stop-Loss) and it doesnt seem to be correct

TIA

[SShui]

is this not possible then?

something like this:
http://www.myfxbook.com/forex-calculators/position-size