Description:
The program does not store the reference to the connected cell (data card) of the form field. 
The field "steel section" allows me to choose the sections connected to the profile sheet, and inserts the value chosen in the cell k12. However, every time I leave the program and re-enter the program, I lose the connection of the cell I had previously saved.
The error is quite problematic because it forces me to change the connection to the connected cell every time to use the sheet.
In my opinion, it is necessary in future versions to simplify a little the use of these form tools, too cumbersome and above all they do not allow to make immediate references to the cells, you have to go out marking the areas of interest on a sheet and then write them manually in the boxes. It also requires a more careful programming of calc because it is often used for professional purposes and having to hand over every time you make updates to the sheet program for which a lot of effort has been spent in making it is tedious.
Thanks anyway and good work

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Steps to Reproduce:
1.select sezione acciaio
2.no change


Actual Results:  
no change

Expected Results:
Modification of all data in column E




Reproducible: Always


User Profile Reset: Yes



Additional Info:
[Information automatically included from LibreOffice]
Locale: it
Module: SpreadsheetDocument
[Information guessed from browser]
OS: Windows (All)
OS is 64bit: no


User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.108 Safari/537.36