Disable POST button in MIRO - Simulate subscreen

Dear Experts,

I have a requirement to disable the post button on MIRO
screen. Using SHD0 transaction I created a variant and able to disable the post
buttons through Menu Functions as well as Ctrl+F11. But still we have one Post button enabled from
Simulate window.

When after entering data in MIRO initial screen, if we go to 'simulate' button to simulate the accounting entries there is still one 'Post' button from where we can post the invoice document.That button couldn't be disabled so far with SHD0 variant.

Have you ever came across this scenario? Your help would be much much appreciated.Thanks

BR,

Sandeep