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On the Functions tab insert the Python Script.
Example: Last 8 Numbers
uid = uid_var
str = str(uid)
x = len(str)
uid_var = str[x-8:x]
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Code explanation:
uid = uid_var
str = str(uid)
sizeOfUid = len(str)
numberOfChars = 8
uid_var = str[sizeOfUid-numberOfChars:sizeOfUid]
Close the properties window, save the changes made and you should have the expected result.
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