int $windowId;

int $controlId; 

float $value = 5.25;

// First create a user window to place the Control on

$windowId = `createWindow "MyWindow"`; 

// Create the Control on the Window, passing

// in the Window Id of the user window we 

// just created. Make floating point, specifying the initial

// value and a spinner

$controlId = `createNumBox $windowId -num $value -spin -flt`;