Hello all,
I have a named query returning a dataset on root custom property.
The drop down component has a named query that provides a list of values to choose from. The selectedValue is bound to a named query that pulls a number from the DB taking an integer as a parameter.
This integer comes from a custom property that is expression bound to a value in a dataset on the root component.
Here is the expression binding for the custom property that produces the error:
{Root Container.sb_list_metals}[0, 'Pos_ID']
When I open the screen in the designer, I always get a NullPointerException on the drop down's custom property expression binding. But every dataset, every other bound property has the correct values, nothing missing.
If I choose Retain Rows on the named query binding,
then I don't get this error.
The drop downs:
It's data
In this case the drop down should take the value of 9 and use that as the parameter in the query binding for the selectedValue.
The Error details:
Exception: Error executing expression binding on
Dev-Maintenance Control.Root Container.Container Metal Hours.Dropdown Position 03_1.pos_id
caused by ExpressionException: Error performing subscript operation
caused by NullPointerException
