How can I debug an Update?

[Schnaddel]

Hi

I see that it is possible to debug my setup, but how can I debug the "update mode" of my setup?

The link created in the start menu for my setup indicates that the setup.exe is called with "/update" passed as argument.

Where (in which dialog) can I specify that I want my debug session with a "/update" argument added?

Searching both this forum as well as the help does not give any hints on this issue.

BR
Michael

[MichaelNesmith]

Just change your MSIcode script to set the variable on the first line of its execution to the exact value you require