Crm App formula Not working

[marcobolo374]

i want to make a "catch up list' to bring out the contact that don't have a event log for more than 1 month 

thats what i have donethis is contact master tableLast Appointment Date FormulaAppointment Or Event Log

it dose not work properly unless the created date time is equal to app date time

Formula for column last Appointment Date

[Marc_Dillon · Accepted solution]

MAX( [related appointments...][app date time] )

https://help.appsheet.com/en/articles/4575708-list-dereference

[marcobolo374]

can you explain more

[marcobolo374]

I got it thank you so much