Hi @Sgomezba !!
In addition to previous proposals I would like to add one more alternative to your case.
You can use Knime text processing nodes for your task. All you need is convert the input column to document type (target to be modified) using ‘String to Document’ node, then you can use a ‘Dictionary Replacer’ and finally, use ‘Document Data Extractor’ node to get the modified text.
Would be helpful if you add a file/workflow with data. Hope it works. Here is a small example.
Text replacement.knwf (25.9 KB)