AND OR in "Filter", "Set a condition"

I created a workflow with a „set a condition“ function. I have an OR and an AND inside, and it looks like nintex workflow can’t handle “OR – AND” in a function, or is there a special way of entering it?

Example

Set a condition:

If field A=10

OR

If Field A=11

AND

Field B=1

This always stops, no condition matched, although the values are like one of the two conditions