OSD variables

I have wrote a VBS script to get task sequence variable to be populated with dynamic application variables

Set objTSEnv = CreateObject("Microsoft.SMS.TSEnvironment")

next I am planning to read a excel sheet and then populate Dynamic variables for application installation to tasksequence environment variable as shown below..

objTSEnv(APP??) = objWS.Cells(i,6)

In the task sequence I created a base variable as "APP"..

can I know what variable I should update with APPLICATION ID ?

verification