# substitute! 


someVar <- "This is my old value"

var.subst <- substitute(someVar)
var.asign <- someVar

someVar <- "This is my **NEW** value"


# EVALUATING 
#------------
  
  > var.subst
  # someVar
  > var.asign
  # [1] "This is my old value"

# EVALUATING, USING eval()
#-------------------------
  
  eval(var.subst)
  # [1] "This is my **NEW** value"

  eval(var.asign)
  # [1] "This is my old value"