Function findcontentbyattribute() - Search Children Folder inside another folder

Hi Guys,

Does anyone know what is the correct syntax of the function findcontentbyattribute() to search a folder inside a root folder?

I've already tried the following syntax:

- findcontentbyattribute(false(), "folder", "name", pv!folderName, pv!rootFolder), where pv!folderName is Text and pv!rootFolder is of the Folder type. The function returns an empty value despite de folder referenced by pv!folderName exist.

The syntax described on plug-in page is : findcontentbyattribute( searchAllContent, contentType, attributeName, searchCriteria, [rootFolder, ][rootKC] ) - however I don't understand how to define the fifth parameter.

Do you have some hints?

Thanks