| Function group | Execute on client | Platform(s) |
| String | NO | All |
isnumber(string[,decimal-char][,thousands-char])
Returns kTrue if the specified string can be evaluated as a number; kFalse otherwise.
The optional parameters can be used to define the decimal and thousand separator. If the optional parameters are not specified the default separators are used, a '.' for the decimal and a ',' for the thousand.
CalculatelStatusasisnumber(lString)# lStatus is kTrue if lString can be evaluated as a number