Try installing the VST plugins to "C:\Program Files\VEGAS\VEGAS Pro 19.0\MAGIX Plugins", because there are also magix vst plugins in that folder. If you install yours vst plugins there, they will be recognized too.
Then go to Vegas' Preference - VST - click the "refresh" button and your vst plugins will be recognized.
The VST-2 version of Ozone Elements should work in VP, So confirm the VST-2 version is installed. Many VST plug-ins are installed in the Program Files/Steinberg/vst folder by default. VP still does not yet support the VST-3 format AFAIK.
btw, this topic should have been posted in the 'Vegas Pro Audio' forum.
@rraud I use it for my music video's sorry I placed this topic here , but you are right it had to be posted in the Vegas Pro Audio. Ozone works perfect now its indeed VST-2