Let me explain it to you through an example:
We all know that Allah SWT commanded us -through the Legislative will- to pray 5 times a day, and fast the holy month of Ramadhan etc, but he did not force us – through his Formative will- to do so. Therefore, we notice that many people disobey the command, while if his wanted us -through the Formative will- to do so, nobody was going to be able to disobey, but this has no meaning.