Cannot perform & operation when the right-hand value is empty

[BPat]

Failed to evaluate expression '[StatusNote]&"*DAYS AUTHORIZED: " & [_daysAuthorized] & "{ENTER}" - Cannot perform & operation when the right-hand value is empty


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Pat
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[John__Carter]

You usually get that error when a Number data item is blank or a Flag data item has no value. There's no real concept of null in BP and you have to be careful to ensure things like Numbers, Flags, Dates etc always have a value before you attempt to use the.

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John Carter
Professional Services
Blue Prism
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[Omar-Abu-Snineh]

Is `null` still not explicitly supported in Blue Prism? For example, I have a column named `Sum`, and all records in it are empty. How can I check for that? I mean something like [Collection.Sum] = Null?