POI prompt alert on turn ny turn drawer

I try to set Up the turn-by-turn drawer so when I pass close to a POI (Route POI o global POI), the drawer prompts, warning me that I have reached this Point. To do so, i have the option "POI Cuesta" swiched on. However, it doesnt happen, si the only way to be aware that I have reached the POI is yo watch It directly on the map.