New to BetAngel, figured out a servant, but failed big time...

I want to do the following with a servant:
Place an (obviously) unmatched Back order to the selected market, with the price of best_market_price+0.25
So, p.e. if the back Over 1.5 goals price is at 1.3, then this order should be placed at 1.55
I did it with ticks above best market price in the servant, this way: ...and it works well, if the order price is below 2. But as soon as the price is above 2, the tick value is more than 0.01, so my process is not working anymore.
Is there any way to make a servant like this, where I can place an order best_market_price+0.25? I am aware that there will be a lot of invalid prices this way (p.e. 2+0.25=2.25 is not valid, 2.26 is the nearest valid price), that should be handled somehow as well.
Any ideas appreciated! Thanks