StrContains method is undefined

Hi all, i'm trying to use StrContains function and getting compile error:

Processed 1 file, writing output (x86-ansi):

Error: resolving install function "StrContains" in function "callMe"

Note: uninstall functions must begin with "un.", and install functions must not

Error - abortg creation process

My code

Name "sample"

OutFile "sample.exe"

Function callMe

	Push "Very long string"

	Push "long"

	Call StrContains

	Pop $0

     DetailPrint "StrContains result=$0"

FunctionEnd

Section

	Call callMe

SectionEnd

Am i missing sme thing: include\define\plugin?

Where did you find StrContains? On the wiki?

You need to copy the code from the wiki page into your script...