Question

How to call a!StartProcessLink() inside a!gridColumn

Forum|Forum|11 months ago
August 24, 2025
11 replies
0 views

Hi All, hope you all are doing great, I'm getting the following error:

Error Evaluating UI Expression Expression evaluation error [evaluation ID = PNO05] in rule 'abs_clientsearchresponse2' (called by rule 'abs_clientsearchrequest2') : A null parameter has been passed.

When trying to invoke a process model inside a!gridColumn as follows:

a!gridColumn(
label: "BUC",
value: a!richTextDisplayField(
label: fv!row.IDE_CLIENTE,
value: a!richTextItem(
text: fv!row.IDE_CLIENTE,
link: a!startProcessLink(
processModel: cons!ABS_CLIENT_REQUEST2_PM,
processParameters: {
buc: fv!row.IDE_CLIENTE
}
),
linkStyle: "STANDALONE",
color: "NEGATIVE",
size: "STANDARD",
style: "STRONG"
)
),
align: "CENTER"
)

The rule: 'abs_clientsearchresponse2' is displaying the row without any error:

But when I click over the BUC link, the above error is displayed, the pv is declared as Parameter with the same name in the PM, I haven't been able to find the root cause of the error. Could you please help me?

Any help will be greatly appreciated.

Thanks and regards,

Jose Castellot

stefanhelzle0001

Do you pass the value into the start form of that process?

Did you consider to use a record action?

K

kapils024874

Hi [mention:a11f77a729fb4db2af76b09948583328:e9ed411860ed4f2ba0265705b8793d05] ,
Can we pass multiple parameters into the process model if we are triggering it via Record Actions or related actions instead of using startProcessLink() function?

stefanhelzle0001

No, but for my connecting the process to the right record typically does the trick.

harshas2775

When you click on the link is there any process instance triggered in the backend?
When you test the process by passing a value in the process model (using start process for debugging) is it working properly?

josec857524Author

Hi Harsha,

Yes when the BUC link is clicked we are calling a process triggered in the backed, but we are using a!startProcessLink inside the a!gridColumn and is when we are getting the error: A null value has been passed

if we run the process for debugging it is working fine, so the issue is at the moment to invoke the process from the interface. For any reason the value is not being passed.

josec857524Author

Hi All,

For those who have the same issue, here you go how I fixed it:

a!gridColumn(
label: "BUC",
value: a!buttonArrayLayout(
buttons: {
a!buttonWidget(
label: fv!row.IDE_CLIENTE,
style: "LINK",
size: "SMALL",
color: "NEGATIVE",
saveInto: a!startProcess(
processModel: cons!ABS_CLIENT_REQUEST2_PM,
processParameters: {
buc: tostring(fv!row.IDE_CLIENTE)
}
)
)
}
)