Back an lay odd from selection not bigger then 1 to place trade

[Zedzed1]

Simple question for a lot of you, only im testing a lot but cant find how to do.

I want to have a condition in a rules that the back price and lay price not bigger is then 1 odd

example

Odd back is 6.8 and lay odd is 7.5. Is ok place trade
Odd back is 6.8 and lay odd is 8.2. Not ok the difference is bigger then 1 odd.

You can do this this with relative odds condition i think?

[Dallas]

Yes, the relative odds condition can be used to test the gap in back/lay prices

[Zedzed1]

Yes, the relative odds condition can be used to test the gap in back/lay prices

Dallas i tried everything back less then lay + and - 10 tick
Back greater then lay + and - 10 tick

nothing works
What conditon should you build for this?