Remove spaces before commas in string

This works exactly as I need, IF I use the exact string but if I replace the string with my variable it only removes one space before the commas.

System.Text.RegularExpressions.Regex.Replace(PMRAddress,“\s(?=,)”,“”).ToString

For some reason when I paste my example the additional spaces are removed. I’ve included a screen shot below showing the variable with the multiple spaces.

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