Root Cause: Spaces not allowed as part of numeric values in script variables.
Update to a fix version listed below or a newer version if available where a new table has been added to the installation description - incompatibilities.
Fix Status: Released
Automation Engine 11.2.3 – Available
Prior to upgrading to V11.2 and above, it is recommended that you review any :SET script statements and remove any spaces in numeric strings to avoid the error. This information has been documented in the list of incompatibilities for AE v11.2 in the fix version referenced in the resolution section.