Pascal, that's what I showed him already. Indeed that should work in 2.6.4.
Cappe, you really need to upgrade. I can't even test anymore with 2.6.4 and it is officially unsupported.
And you can't use TList from classes as a generic list. In 2.6.4 you would use TFPGList from fgl.
You probably have seen an example for later versions? Well, upgrade.