Dear all , hello ! I now plan to make a fully-automated condition-based workflow. Imagine the following: 1- Main.yxmd is a Main workflow. Schedule is used to run it regularly. Its workflow contains a Run Command tool for running AAA.yxmd. 2- AAA.yxmd is a sub workflow. When Main.yxmd runs continuously and regularly, the maximum value in the field [Measure] will continuously change. I want to have a trigger mechanism before the Run Command. When if the maximum value > 100 in field [Measure], then AAA.yxmd will start to run through Run Command. This can achieve unattended automatic mode. 3- The problem is how to determine the maximum value > 100 in the field [Measure] and Just Run Command? Thank you very much !