Calculate the similarity of two value string

Hello everyone, I just started to use KNIME so maybe my question is a bit stupid, from my table consists of only two columns I want to add a third column of numeric values or percentages, where these values are the result of the similarity of string values in the previous two columns using metrics as Levenstein,jaro or other. I've tried many ways but i just get stuck .
Thanks in advance.
Kind regards.

there is a nice example on Knime server, named "Address Deduplication".

you may find it very heplful.

Wow , is exactly waht i need it, ty very much man.