In order to take your changes being done in Java action into the Modelar you need to first synchronize your java action with the Modelar by pressing F4 key into the Modelar and then run you code from Modelar .
You are doing changes in a system context, instead of the user context. Instead of creating a system context, use getContext().
You can not assign without damage.
TugasEach = Tugas;
And
if (user.equals(this.UserParameter1)
does n’t work either, you should at least use the id.
What to you want to achieve?