When permissible not to wire data type of Variant to Data?

[Wayne_B.]

In some VIs, the data type terminal of the Variant to Data function is not wired.  When it is permissible or advisable to leave the data type terminal unwired?  Thanks.

Wayne

[JeanPierre · Accepted solution]

When the data type of the data sink of the wire (its destination) is well defined, LabVIEW does backward type definition of the output of Variant to Data. It doesn't work on polymorphic inputs of functions and borders of structures, etc. It is generally harmless to let the type unwired in most circumstances but do not forget that you let LabVIEW decide for you how to convert data.

Moreover, if you put the following line in your labview.ini file:

coerceFromVariant=TRUE

you'll be able to connect the variant directly to the sink, without Variant to Data (and its error handling).

[hye]

In my Vi's , i can't connect variant to sink..Please let me know if you know that..

Regards

Saleh

[Wayne_B.]

Thanks for your help.  My post is an old one, but I'm always glad for the information.  Wayne