scripting it should limit amount of use

[H]

Hi

i have a field that uses a drop down list of values from 1 - 5  to insert in the field.

the field is on a portal.

The portal could contain upto 50 records.

i would like to limit the amount of time each value could be used to 16 times as that is the limit of spaces i have available .

OPTION 1: i would want that once the limit is reached the value greys out if possible .

OPTION 2: if not i would want that it a script should activate on a onobject keystoke / validate it should test it and not allow it.

i would appreciate if one could help me out on this preferbly OPTION 1.

[Fitch]

How about using a popover instead of a drop-down list? That would give you a lot more control. E.g. you could put buttons for each number and those could be conditionally formatted and scripted.