how can i remove the pins from xamarin.forms.maps?

Good morning,
how can I remove the pins from the xamarin.forms.maps map when I move a slider that allows me to select the distance around me?

an example: I have several pins throughout the map, but those that are more than 10km away from me do not want to see them and therefore position the slider on 10km and the pins beyond that distance does not show them to me