Acrobat Customization Wizard and activex Dll

Hi, I want to deploy Acrobat Reader DC with SCCM, it works but I need to change a dll named AcroPDF.dll wich is in C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX because our soft use the older one.

So with the wizard I modify AcroPDF.dll with the older one, I save the mst and I deploy. The mst is well used because the others changed I made with the wizard are done but the AcroPDF.dll is always the new one.

So is it possible to change a dll used by Acrobat Reader?

What is wrong if it's possible to do it?

Thanks