objective c - Getting app version is crash -


i having code app version , save nsdictionary :

    nsstring *version=[nsstring stringwithformat:@"%@",[[nsbundle mainbundle] objectforinfodictionarykey:@"cfbundleversion"]];      nslog(@"version%@",version); //prints right thing     nsmutabledictionary *dic;     [dic setvalue:version forkey:@"version"]; //crash      [dic setvalue:errors forkey:@"errors"]; //work

the error on crash :

setvalue:forundefinedkey:]: class not key value coding-compliant key version

can identify error ?

thanks lot .

i had allocate dictionary :

nsmutabledictionary *dic=[[nsmutabledictionary alloc]init];

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