why "red triangle arrow" show in build array function?

[ELI2011]

refer title, when using 'build array' function, why it show "red triangle arrow" in the input port, see two picture in below, why this difference occurs?

any response is high appreciated!

   

[Norbert_B]

That symbol is the "coercion dot". It shows you that LV is casting the data to something compatible. In this case, i ASSUME that in the first screenshot, all references point to either the same cluster or clusters with the same layout.

In the second screenshot, the references point to different versions of clusters, therefore, the reference has to be cast to a more generic reference.

Norbert

[JensG69]

The datatype of your clusters seems to be different on the right side of your picture. On the left side you bundle only clusters of the same datatype.

Compare: Cluster & Cluster 3 are identical, Cluster 2 differs...

Regards, Jens

[ELI2011 · Accepted solution]

I got the reason: even the label of the controls must be the same.