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Hello everyone, This IFELSE function call is not working properly. I do not receive an error message, but the actions are not executed conditional as I was hoping. Any assistance is appreciated. set.seed(12345) res1<-rbinom(10000,1,.1) rdata3<-transform(data.frame(res1),input1=rnorm(10000,50,10)) data3 #inducing correlation between res1 & input1 ifelse(data3$res1==1,data3$input1<-data3$input1+10,data3$input1<-data3$input1) data3 Thank you, Dan [[alternative HTML version deleted]]