Conditional fields

Hello,

I need Form Maker to create dependent drop down where ID and values
are fetched from the database.

This should begin from creation of a form drop down, like A—>Z, when
the User chooses a value, lets say U, then the second drop down must
be shown based on the DB values, fetching from DB like 11|UA, 12|UB,
etc.

If the User selects UB, then the third drop down will be created on
the fly based on values from DB, like 121|UBA, 122|UBB, 123|UBC, etc.

From the Demo I saw, the conditional fields allows fecthng one field
from DB but it does not allow the WHERE condition based on a second DB
field.
Here, one has to manually enter the value based on which that field
will be displayed.

In this case, it is not possible to create dependent drop downs,
right?

Could you explain this to me is the above is possible or not?

Thanks for your attention.