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Status Will not implement
Portfolio area Production Management (AMPLA MES)
Created by Nina NICHOLLS
Created on Mar 2, 2022

RELATED IDEAS

Allow the use of negatives at the start of Evaluated field expressions

https://dev.azure.com/AVEVA-VSTS/Issue%20Management%20System/_workitems/edit/1583351


Customer creates an Evaluated Field with Evaluation expression starting with "minus" sign, for example

-[Source1].


The project validates successfully but the reporting point does not log values in runtime.


The exception is thrown "Exception: System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: Operator: NEG"


Customer is confused because you can use "minus Variable" expression in HistoricalFieldExpression but this does not work in Evaluated Field.


[Workaround]

Use "Zero minus" instead of just "minus" in Evaluation Expression:

use 0-[Source1] instead of -[Source1]


[What is the impact to Customer/s]

As per the customer:

"Workaround solve the issue, but some junior Ampla developer or customer’s administrator can make a lot of errors with evaluated production fields."



For more info on the primary case, please visit:

https://gcsservicecloudutils.azurewebsites.net/casedetails?casenumber=960118801

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  • Admin
    Nina NICHOLLS
    Reply
    |     Oct 10, 2023

    Will not implement as low priority and there are multiple easy workarounds available for this issue.