[olesen]

Originally Posted by wind_

Hi，Nick
I also have this problem in OF5x, and I changed
tsource().internalField() =...
->
tsource().primitiveField() =...
but it doesn't work, how to fix it?
Thanks
Feng

If you read the docs on GeometricField (https://www.openfoam.com/documentati...tricField.html) you will notice that both internalField() and primitiveField() return const refs to the field. Cannot really change those by placing them on the LHS of an assignment. The compiler is correct to complain. If you want modifiable references, then you should be using the ref() or primitiveFieldRef() methods.