Here are two functions you might apply to your project. One is the Array Max & Min Function. Using this function use the min value and compare to your min set point (450).
The other function you might use is the In Range And Coerce. Using this method you can set a min and max value 450 - 500 (do this first, then wire your array to the X input.) The output will be an array of Booleans all will be true unless they fall out of the range you specify. A second output will be an array of the inputs except any that fall out of the range you specify will be coerced to the min or max value. Example: 465;480;420;475;505 will return T;T;F;T;F and output 465;480;450;475;500. There are many variations where these two functions may be used. They may be found in the comparison or the array pallet on the wiring diagram. Perhaps one of them will help you with this problem.
