How do I set the segmentation rules?

Hi guys! There is a question. It is necessary to establish rules for the segmentation of the counterparty. If he has more than $10,000 revenue, then assign a segment in the directory with the value A, if the revenue field is less than $1,000, then segment B. How do I do this? In the "event - signal" business process, there is no sign greater than or equal to, only flat or uneven. I didn't find anything that would help me in setting up business rules either. Who can tell you? Version 7.18