Hi @BartTechne ,
I've made a test for your reference:
1\I assume there is a collection:
ClearCollect(
Points,
{Lat:2.2789227,long:101.8536123,pinColor:"Blue"},
{Lat:2.2789237,long:101.8536133,pinColor:"Blue"},
{Lat:2.2789267,long:101.8536153,pinColor:"Blue"},
{Lat:2.2789297,long:101.8536173,pinColor:"Blue"}
)
2\Add a map control(Map1)
Items
Points
ItemsColors
"pinColor"
ItemsLatitudes
"Lat"
ItemsLongitudes
"long"
OnSelect
Patch(Points,LookUp(Points,Lat=Self.Selected.Lat && long=Self.Selected.long),{pinColor:"Red"})


Best Regards,
Bof