How to change the version of perl in Eclipse -

i using eclipse neon 4.6.1 epic plugin 0.7.2 perl. trying change version of perl used eclipse can't quite figure out how change , how check it's changed.

i using os x , perl 5.24.0 installed.

[~]$: perl /usr/local/bin/perl [~]$: perl -v perl 5, version 24, subversion 0 (v5.24.0) built darwin-thread-multi-2level 

but when run perl script following, says running 5.18

 system ('perl','-v');   perl 5, version 18, subversion 2 (v5.18.2) built darwin-thread-multi-2level  (with 2 registered patches, see perl -v more detail) 

so seems path variable used eclipse incorrect, don't know how check version of perl called eclipse.

in preference of eclipse, there settings called "perl executable"

is how change perl version , how can check if indeed changed?

@simbabque's way of checking confirmed perl version changed.