FEEL-01017 Unable to evaluate expression

BPMN & Modeling Discussion & Questions
1

Hi to all,
I’m trying to use DMN in a BPMN process. I tested the decision table online and it works,
but when I start the process on Camunda I receive the following error:

“FEEL-01017 Unable to evaluate expression ‘“a”’ as no input is set. Maybe the inputExpression is missing or empty.”

Where is the mistake ?ApproriatezzaPrescrizione.dmn (2.3 KB)

Thank you
Bye

Andrea Bozzetto

2

This is the bpmn.

diagram_1.bpmn (5.0 KB)

3

Hi Andrea,

it doesn’t work because your decision table have no input expressions.

Best regards,
Philipp

4

Thank you. There are some input expressions but It is missing the property camunda:inputVariable

Bye
Andrea

5

Hi Andrea,

the property camunda:inputVariable is not required (and you don’t need it in your case). But when I look at your DMN then I see no input expression (i.e. the body), see:

<decisionTable id="decisionTable">
      <input id="input1" label="Prestazione">
        <inputExpression id="inputExpression1" typeRef="string" />
      </input>

It should look like this:

<input id="input1" label="Prestazione">
        <inputExpression id="inputExpression1" typeRef="string">        
              <text>prestazione</text>
        </inputExpression>
</input>

Note that you have to enter the Advanced Mode in the Camunda Modeler to set the input expression.

Best regards,
Philipp

1 Like
6

Create DMN in Advance mode and then use the variable names which are mentioned in Expression to invoke DMN.

It will surely work.

7