[Bug]: Number of copies accepts invalid values and skips execution with no error

[mocoxk]

Apache Hop version?

2.17

Java version?

openjdk 21.0.9 2025-10-21 LTS

Operating system

Linux

What happened?

If I set a non-numeric value in the “Number of copies” field for a transform, Hop doesn’t validate the input. The editor allows any value (like “Z”) without warning or error.

If the transform with the invalid “Number of copies” is the final one in the pipeline, the pipeline finishes, but that transform is not executed and there is no error or warning.
If the transform with the invalid value has another transform connected after it, Hop shows an error and the pipeline hangs (does not finish). In this case, I have to force stop the pipeline.

Issue Priority

Priority: 2

Issue Component

Component: Hop Gui

[hansva]

.take-issue