Protected fields in MMBE variant can be changed

Hi,

I created new report transaction ZXXX with following property.

Program:RMMMBESTN (T-Cd MMBE)

Selection screen:1000

Start with variant which plant and storage location are protected fields

is called from Screen variant.

Now I could set protcted fields at first but when the case message has

outputted or display overview list and return to selection screen,

those fields can be changed.

In other words,

if message shows up, the variant is cancelled ( it means return to initial screen )

I think it's the matter of standard function.

Is there any solution?

Thanks!

Muneyuki Harada