Counting Length of a String Variable in CCX editior

Many time while designing a ccx script i came across a common requirement that is checking the length of the number of character in a variable .
Here i am defining a method that can be used to count the number of character in a string.

For this define two variable , One is of type string and other is of type interger

Type integer variable (intExtnNo)
Type  string variable (strExtno)

The use the below statement to count the number of character of the string variable

intExtnNo= strExtno .length()

The function strExtno .length() will calculate the number of character and return a integer value.