Box Trigger To Add Seconds Onto Timer

Sorry i have worded this question all wrong the title should be: How do i make widget update with a timer. I use these bps for this The Main Character BP/First Person Character BP: Screenshot - 20e3f1b89779ce339acdc6a39944f570 - Gyazo The Box Trigger BP: Screenshot - 2ac3ac9d4a55aab4505957910a74225c - Gyazo And then the mat that i got help from you : Screenshot - f311ca6f610a792b1386f26f5bcc4f96 - Gyazo Where should i put in the plane reference?
Everything else i had already done before so the only thing i really needed help with was the widget even posting this question i just worded it wrong.