IBM Support

TypeError: prmptCtrl is null when applying render variable to prompt control

Troubleshooting


Problem

When running a report where a render variable is applied to a value prompt, which has an associated custom control, if the prompt is not rendered, you see the following error:
image 7933
The error is referring to the custom control.

Document Location

Worldwide

[{"Line of Business":{"code":"LOB76","label":"Data Platform"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSTSF6","label":"IBM Cognos Analytics"},"ARM Category":[{"code":"a8m500000008d78AAA","label":"Reporting"}],"ARM Case Number":"TS004966777","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Version(s)"},{"Product":{"code":"SS6G84","label":"IBM Cognos Analytics on Cloud"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB76","label":"Data Platform"}},{"Product":{"code":"SSLKT6","label":"IBM Maximo Asset Management"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"","label":""}],"Version":"","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]

Log InLog in to view more of this document

This document has the abstract of a technical article that is available to authorized users once you have logged on. Please use Log in button above to access the full document. After log in, if you do not have the right authorization for this document, there will be instructions on what to do next.

Document Information

Modified date:
14 January 2026

UID

ibm16407086