I am using the "enter processing times based on patient's location/area" option in FlexSim HC. It seems that if I select the processing time from the drop-down list (i.e. "choose a distribution") or enter a time in the, "Then the processing time is," fields, the default expression does not work, and the string array in the code does not read the expression as it supposed to. Simply put, I have to manually add quotation marks to the default expression or the entered processing time, to solve the problem.