An error occurred while executing a save: java.lang.ClassCastException: com.appiancorp.core.expr.portable.Value cannot be cast to com.appiancorp.core.data.Variant

The error points out that when you select a dropdown value (of the dropdown component at line 314), a save is executed in which the target type and value type do not line up.

i.e. you are trying to save some value of type A into a target that expects type B value.

This obviously will not work.

The error points out that when you select a dropdown value (of the dropdown component at line 314), a save is executed in which the target type and value type do not line up.

i.e. you are trying to save some value of type A into a target that expects type B value.

This obviously will not work.