How to use the DuoVia.FuzzyStrings in a workflow


I’m new to UiPath and Studio. I’m trying to get a workflow working and need to have fuzzy matching on strings. My project uses VB.Net.

For this purpose I’ve found the package DuoVia.FuzzyStrings and I can’t find a way to use it.
The documentation of the package tells me that it extends the String class with additional methods like FuzzyEquals. But in Studio the compiler complains that this method is not available.

Anyone had had something similar and knows the answer?

Thanks, pieter