String Functions

Operator	Parameter types	Result
StrLen(x)	x - string	Length of x in characters
SubString(x,offset,length)	x - string offset - integer length - integer	Returns the substring of x starting at the offset position and the length specified in length.
ToLower(x)	x - string	Converts x to lowercase
ToUpper(x)	x - string	Converts x to uppercase
Trim(x)	x - string	Trims spaces from both sides of the string
x Contains y	x, y - string	Returns all y that contains x