I have a field that’s a yes/no field and then I have a dropdown on the page with static choices, yes or no. But when I do a workflow to set the field with this dropdown’s value, all I get is either yes, or no, but if I pick “this dropdowns value” it goes red and won’t work?
The yes and no values in your drop down are text, and therefore not compatible with your yes/no field.
Try this in your workflow:
Include an “only when the dropdown = yes” to set the value “= yes”, and a corresponding “only when” for the no option.
Try using an option set instead. Create an option set: Display = yes, value=yes (type yes/no), Display=No, value=no (type yes/no). And in the dropdown use dynamic choices (the option set created)