question

You can use the reset trigger where you can define the Type. But, first set up a label in the Storage System call Type.

Using a for loop in the reset trigger, you can define the starting bay to the ending bay with the respective level with Type value.

The following example is for loop. You need to have three sets of these for the different range of the bay.

Object current = ownerobject(c);
Storage.Object rack = current;
int ending_bay= rack.bays.length;

for (int row=1; row<= ending_bay ; row++)
{
int ending_level = rack.bays[row].levels.length;
for (int col =1; col<=ending_level;col++)
{
Storage.Slot slot = rack.as(Storage.Object).bays[row].levels[col].slots[1];
slot.Type = 1;
}

}