MBO Operations Input parameters

Hello everyone,

I am having some trouble setting the input for an MBO operation.

I made a new "create" operation on my MBO, I selected the input,

i generated the client parameters and i also did the mapping.

In the screen i created a textbox with a textbox_key,

then i made a button for call the OnlineRequest for the "create" operation

and on the parameter mapping I added the textbox_key where it had to be.

When i call the operation, on the error i recieve the error that the parameter is missing

while is written on the textbox.

Am I missing Something?

Thanks in advance and regards

Adriano