Condition Request: Max liability

Hi there...

Id like to request a condition please.

I know you can put in the amount section, something like: Amount 50/(lay_price-1) ... to bet a fixed liability of £50 on lay regardless of the odds. Same for back_price

Id like a condition that WONT fire off a trigger if maximum liability for a bet hes been exceeded

Suggestions:
(Dont do if) And Not selections Max-layb equals or more than 50
(Dont do if) And Not selections Max-Backb equals or more than 50

(Do if) And selections Max-layb equals or less than 50
(Do if) And selections Max-Backb equals or less than 50

Folks please vote agree up if you like this

All the best 

... Regardless of the odds in play

Thanks