Search on properties created by Java code

Hello,

I've got files created automaticaly by Java code and having special properties added in the "Miscellaneous" list.

The problem is that those properties are not added in the properties list of the portal (<i>System Administration/System Configuration/Knowledge Management/Content Management/Global Services/Property Metadata/Properties</i>).

So, I'm not able to add those properties in the list of predifined properties of my search screen.

I've tried to add in the list a property having exactly the same name than one of the properties from the automaticaly created files but I've got 2 twice the same property displayed in the "Miscellaneous" list.

Does anyone has an idea to search on those automaticaly generated properties?

Thanks in advance!