command line - Windows batch file if else usage

Sorry I am new to this stuff. I'd like to run in a certain sequence the same bat file with different parameters. I wrote a very simple batch file:

@echo off

REM Note: to see all command line usage options, run bsearch_headless.bat without any arguments.

call behaviorsearch_headless.bat -p test_behaviorsearch.bsearch -o pippo

ECHO
IF EXIST pippo.finalBests.csv (call behaviorsearch_headless.bat -p test_behaviorsearch.bsearch -o topolino)
else goto :eof  

:eof
ECHO Simulatione End!
PAUSE

It does not work because else is not recognized.

Many thanks for any help!