[Pharo-users] How to take care that the + before a number is ignored

Hello, I have a collection that looks like this : sampleData1     "comment stating purpose of message"     ^ #( -8     +7) I want to add those numbers up but the code chokes at the + so I did this : FrequencyFinderData  new class sampleData1   inject: 0 into: [:sum :each | (each ~= $+) ifTrue: [sum +  each asInteger] ] so when the each is not a +  it must count it but still the code chokes at the + Where do I think wrong ? Roelof