need help to convert ahk script to au3

Hi i have this code from an AHK script, basically it waits until you release rightmouse and sends a leftmouse click.

code:

-------------

numpad0::suspend
{
~+Rbutton up::
click
return
}
{
~Rbutton up::
click
return
}
{
~^Rbutton up::
click
return
}
--------------

endcode:

I tried to do this with autoit3 everything works except i dont know how to make it click AFTER i release rightmouse.

it clicks while mouse is pressed down.

Or if someone knows how to make this in autoit3 please show me i would like to learn.

Basically what i need as explained above is for whenever i release rightmouse it will click leftmouse. Also when i hold shift and release rightmouse at the same time, any help appreciated thanks.