int $windowId;

int $controlId;

float $val;

// First create a User Window to place the Control on

$windowId = `createWindow "MyWindow"`;

// Create the User Control on the Window. 

$controlId = `createNumBox $windowId -flt -num -10.75`;

// Get the value of the Num Box

$val = `getNumBoxNum $controlId`;

print $val;