With this option, you can set the Wait step the check the external system is a selected value has reached a set value.
The first field of the condition is where you need to select the related step, of which you want to check the value. Once the step is selected, all fields from that step become available. Select the field, set the Operator and enter the value to check against in the last (text) field.
Use the button to save the changes, or use the button to discard any changes.