Laser reading not between range_min and range_max! [closed]

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Hi, i'm trying to use nav2d package on turtlebot3 for autonomous exploration(third tutorial). When i launch it, everything seems to work, except for the fact that rqt_console shows the warning "Laser reading not between range_min and range_max!". Looking the messages published on /scan topic it says range max is 3.5 meters and actually some reading goes beyond this distance. The point is: how can i modify that value? Because i've tried modifying in Sensor.cpp the Custom laser range, but that doesn't work and also on yaml files i don't find any parameter referring to my laser range. Thanks for help!!