Negative Value in Xpath generates error since Mendix 10

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Hello, since Mendix 10 I have the problem that a query of a negative value in a XPath constraint generates an error.   A simple example: [ Tasks.Task_Plan/Tasks.Plan/Sort != -1 ]   Error: Unknown function '-'.   Example mpk: Link   Does anyone have a solution or can explain the error to me. In version 9 everything ran without problems.  
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2 answers
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Hi, 

 

What is the attribute type of sort? Is it a string or integer value.

 

But it your code works in 9 and now not in 10 it may be a bug that you need to report to Mendix for review.

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Hi Ingo,

 

I've opened your mpk and I'm experiencing the same issue. This is probably a bug. You can report it here.

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