Problem with filtered list

Hello my problem concerns the use of subsets of my list that matches a given criteria, I would be thankful if someone could give me a hint on that:

consider a cell array (N,3): ID | Value (Double) | Text

Now I want that matlab gives me the maximum of all values of those rows that share the very same Text and replaces the current values, but of only for those that match that criteria. The point is that the criteria is dynamic, meaning there are many subsets and I want to "find" matlab the rows with the same text itself.

Thanks in advance!