Hi Everyone if any can help me please!!

I want to know how i can put a stop loss more than 20 ticks. For example I am trading on football match Arsenal - Liverpool. I lay the draw @2.5 and I want to put an stop loss in @1.25, is more than 20 ticks that geektoy let you to put. Is more than 50 ticks and I wanto to know How i can?

Because I tried once with put the stop loss at that point @1.25 with the Ladder but the geektoy close me the trade exactly to 20 ticks and sadly a goal came after and loss a opportunity.