I’ve tried this

\setupinteraction[state=start]

\definesymbol[yes][{\externalfigure[check-mark-svgrepo-com.svg][conversion=mp]}]
\definesymbol[no][]

\newcount\chk
\def\chk{%
\global \advance \chk by 1
\setupfield[setup1][width=0.5cm, height=0.5cm,rulethickness=1pt, corner=round, framecolor=red]%
\definefield[checkme\the\chk][check][setup1][yes,no][no]%
\field[checkme\the\chk]%
}

\starttext

\chk

\chk

\chk

\stoptext

But it gives the error ” You can’t use \global after \advance”

But this example works fine

\setupinteraction[state=start]

\newcount\clozecount
\def\mycloze{%
  \global \advance \clozecount by 1
  \definefield[uniqcloze\the\clozecount][line]%
  \field[uniqcloze\the\clozecount]%
}

\starttext

Frogs have four \mycloze\ and two eyes.
Frogs have four \mycloze\ and two eyes.
Frogs have four \mycloze\ and two eyes.
Frogs have four \mycloze\ and two eyes.

\stoptext

From 

https://tex.stackexchange.com/questions/560042/how-to-create-unique-clozes-in-context-in-a-pdf-that-users-can-type-in

> 24 maj 2022 kl. 07:44 skrev Jan-Erik Hägglöf <skrantajanneman@gmail.com>:
> 
> Thank you, unfortunately it has no effect. Even if I make a macro, still it is the same field.
> 
>> 23 maj 2022 kl. 21:59 skrev Pablo Rodriguez via ntg-context <ntg-context@ntg.nl>:
>> 
>> On 5/23/22 13:11, Jan-Erik Hägglöf via ntg-context wrote:
>>> HI!
>>> 
>>> Tried to make a checklist in an interactive document.
>>> 
>>> The problem seems to be that all checks/uncecks in same click, not each
>>> individually.
>>> 
>>> Is there something wrong with my code?
>> 
>> Hi Jan-Erik,
>> 
>> you basically put the same field twice.
>> 
>> Add something like:
>> 
>> \definefield [check-you] [check] [setup 3] [yes,no] [no]
>> 
>> \define\chka{\field[check-you]}
>> 
>> \chka
>> 
>> Checks will be different then.
>> 
>> I hope it helps,
>> 
>> Pablo
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>