strikethrough on calendar event

I’m using the SC calendar and have added a field to it called ‘complete’ which has a value of 0/1. When the value is 1 I want to strikethrough the title field of the event. I can do that on a grid but haven’t figured out how to do it on a calendar; the method used on the grid doesn’t work (I assume because I don’t know what the field is called … tried to use google inspect but not having any luck. I assume that 'SC_seq_page" is not what the the event is called. Here is the code to strikeout a field on a grid:

//20200422:bh Strike through the name if item is completed

if ({completed} == ‘1’) {

echo “<style>#id_sc_field_name_” . $this->SC_seq_page . " {text-decoration:line-through; }</style>";

}

El evento es el onrecord.
Saludos.