vuforia action gives error

[migero]

Assets\PlayMaker Vuforia\Actions\VuforiaSetPersistExtendedTracking.cs(29,13): error CS1061: 'ObjectTracker' does not contain a definition for 'PersistExtendedTracking' and no accessible extension method 'PersistExtendedTracking' accepting a first argument of type 'ObjectTracker' could be found (are you missing a using directive or an assembly reference?)

[migero]

vuforia version is 8.3.8

[jeanfabre]

Hi,

uhm, not too sure what this action was supposed to work on which vuforia version... Are you sure you want to use such an old version of Vuforia?

Can you try to download the 2018 or 2019 variants depending on which unity version you have ( on the ecosystem)

Bye,

Jean