{SumTime()} function how to use it?

[alex_negotel]

Good afternoon;
I have doubts about how to use this function, even though the column informs the result and it is always 0.
Can anybody help me ?
Thank you very much in advance......

[Lech Kulikowski]

Hello,

A function returns the sum of all the values in the specified column or expression.
Parameters
expression - An expression on what to perform the aggregation.
Return Value
A TimeSpan value.

Thank you.

[alex_negotel]

Good morning;

Thank you in advance for your response, but I've already been using it as per the image posted, but even so the value continues to be zero.
I am using sql oracle the data type and a string converted to TIMESTAMP.
Do you know what I can adjust?

Thanks

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[Lech Kulikowski]

Hello,

What product and version are you use?

Thank you.

[alex_negotel]

My version 2019.2.2 report designer, the same and incorporated into my ERP.
Thanks

[Lech Kulikowski]

Hello,

Please send your request to the developers of your ERP. We do not know how they use our components in it.

Thank you.