Change Status of Checkbox

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Hi,



Is it possible to change the status of a checkbox without clicking it (specifically, within a form)? I need to be able to change the state of a checkbox based on other selections, as per the example below:


The user can select 1 of 3 values from Column I – Option 1, Option 2, Option 3. Based on that selction, they will be able to select multiple values from a list of options (A-G) in Column II – if Opion 1 is selected, A-C become available; if Option 2 is selected, D-F becomes available; and if Option C is selected, G becomes available.



The problem I’m running into is, if I make Option 1 available, the user can select A-C. If they then choose Option 2, they can select D-F, although A-C will remain checked.



I can limit the user from only selecting one value in the first choice, Column I, II, or III by utilizing show/hide options, but can’t seem to figure out a workaround for the secondary column.


I can provide images of the example if necessary.


Thank You!!!


I didn't find the right solution from the Internet.



References

community.trivantis.com/forums/topic/change-status-of-checkbox/


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