To set value to an FX Currency field from server-side(like script include, workflow, etc.), use the below sample code:
gr.salary.setDisplayValue('EUR;1000');
gr.update();
To set value to an FX Currency field from client-side(like client script), use the below sample code:
g_form.setValue('salary' , 'USD;1000');
gr is the GlideRecord object to your record that you want to update
salary is the sample field name in back-end,
EUR is the sample currency(Euros)
1000 is the sample amount
Note : In place of EUR, you can use USD / JPY / CHF / GBP
Long Live ServiceNow!
