tree = rpart(target~ main_var1+var1+var2+var3
+var4+main_var2,
data=df,
method = 'anova',
control = c(maxdepth = 3, cp=0.00012, minsplit=80, xval=10))
I have this code to build a DecisionTree, however it builds it without using main_var1 and main_var2, is it possible to force it to use those variables?