Change the time from the Dashboard Bigtimer / eztimer

I found something else with eztimer

oli19

I can not the function

if(msg.payload.mon ){
msg.payload = ("true");

}
return msg;

|msg.payload.mon|Boolean: true enables the schedule on a Monday, false disables it.|
|msg.payload.tue|Boolean: true enables the schedule on a Tuesday, false disables it.|
|msg.payload.wed|Boolean: true enables the schedule on a Wednesday, false disables it.|
|msg.payload.thu|Boolean: true enables the schedule on a Thursday, false disables it.|
|msg.payload.fri|Boolean: true enables the schedule on a Friday, false disables it.|
|msg.payload.sat|Boolean: true enables the schedule on a Saturday, false disables it.|
|msg.payload.sun|Boolean: true enables the schedule on a Sunday, false disables it.|

https://github.com/biddster/node-red-contrib-schedex