Within RR there isn't a restriction of type ... which allows a variable to contain a zero or a null string. So a "" is treated the same as 0. I.e. the variable has NO value.
To resolve this you can check the variable prior to saving it for a "" and then set it to 0 or "0" which will then cause it to log the digit. You can probably use a If_statement module or the VBScript module to check for this issue prior to the Write_Variables module.
STeven.
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