System Workbench for STM32

Hi,
The solution proposed by Kevin is working for me.
There is no ST Board for the F407VE, but I can launch the debug on a custom board with the following steps :
- I choose Debug As > Debug configurations >> Ac6 STM32 C/C++ Application;
- I update the "Debug Device" and "Debug interface" fields depending on the custom board features (see snapshot);
... then it works