value(expr, var value) works for affine expressions but not for variables or constraints

value(expr, var value) works for affine expressions but not for variables or constraints: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). JuMP already provides a nice way to evaluate an affine expression under a user-supplied mapping from variables to numeric values: