Add following code to flash Action Script will restrict user to input only Numeric Values
textField_IntanceName.restrict = "0-9"
following code allows A-Z except R and K:
textField_IntanceName.restrict = "A-Z^RK";
// Example 1: Allow only uppercase A-Z, spaces, and digits 0-9.
my_ti.restrict = "A-Z 0-9";
// Example 3: Allow only digits 0-9, dash (-), ^, and \
my_ti.restrict = "0-9\\-\\^\\\\";
//Example 1: Allow only uppercase A-Z, spaces, and digits 0-9.
my_ti.restrict = "A-Z 0-9";
textField_IntanceName.restrict = "0-9"
following code allows A-Z except R and K:
textField_IntanceName.restrict = "A-Z^RK";
// Example 1: Allow only uppercase A-Z, spaces, and digits 0-9.
my_ti.restrict = "A-Z 0-9";
// Example 3: Allow only digits 0-9, dash (-), ^, and \
my_ti.restrict = "0-9\\-\\^\\\\";
//Example 1: Allow only uppercase A-Z, spaces, and digits 0-9.
my_ti.restrict = "A-Z 0-9";