I found this problem when I trained with reference to “Training Exercises for Integrated Water-Energy Planning:Linking WEAP and LEAP”. If I type the sentence directly, it works. (100*Min(1,WEAPValue(Supply and Resources\River\Green River\Reservoirs\Reservoir with Hydropower:Hydropower Generation[MW])/Exogenous Capacity[MW])) When I use LEAP’s Expression Builder to select branch/variable from WEAP to LEAP, it doesn't work. When I click options "select from WEAP",it always show me the error in the WEAP(WEAPBranches.item:Parameter must either be a branch name (text) or an index(number). Then the LEAP crashed. I don't know why. Because everything i do is as same as the exercise,except that the software's version. The LEAP version is 2020.1.0.57(32bit),The WEAP version is 2021.0. My E-MAIL is hr19961129@163.com, I would appreciate it if i can get some suggestions from the expert. Thank you