Values for this kind of field are stored into an array, when adding checkbox fields into the questions attribute shortcode, there are not rendered (Array is output) and a notice error is thrown.
To avoid this, i suggest to output a comma separated list of values
Values for this kind of field are stored into an array, when adding checkbox fields into the questions attribute shortcode, there are not rendered (Array is output) and a notice error is thrown. To avoid this, i suggest to output a comma separated list of values