====== CheckNumeric ======
The function **CheckNumeric()** gets a string to be checked for literals as a parameter. The function returns this string if it does not contain any letters. If letters are included, an error message is displayed. \\ 

**Note:** If you do not want to receive an error message but a NULL, please use [[en:transformation:mappings:funktionen:numerisch:makenumeric]].

==== Syntax: ====

<code>CheckNumeric('Number/String')</code>

==== Sample: ====

<code>CheckNumeric('12345')</code>
returns "12345"
<code>CheckNumeric('12A45')</code>
returns the error message "The CheckNumeric () function failed.

{{:images:sign_warning.png?nolink|}}**Note:** This function is useful to force a task if you want to scrape a numeric value into a database, but it cannot be converted.