Password entries in ALV

Hi,

i'm using an ALV list with 2 columns, like:

 
field       | value
---------------------------
name        | Tom
password    | secret
address     | Downtown

The values in the second columns are editable.

So far so good but now i would like to have a *-entry password field.

Every entry in this password field should be displayed at input time as *.

e.g.

 
field       | value
---------------------------
name        | Tom
password    | ***********
address     | Downtown

Any suggestions? I would say it is impossible 😔

Thx Marek