26 is not a viable column name in a data.frame, so its not clear how you got here.
But if you are using dplyr::rename, the new name should be on the left with the old on the right:
a_frame <- data.frame(a1=c(1,2,3))
# fine
b_frame <- data.frame(2=c(1,2,3))
# error
c_frame <- data.frame(`2`=c(1,2,3))
names(c_frame)
#fine but got auto renamed to X2
> names(c_frame)
[1] "X2"
rename(c_frame, Jan=X2)
#now its called Jan
```r
to share 20 records from your data try:
dput(head(Clean_AIM9X,n=20))
and paste the results but use a line of 3 backticks to make it format in the post
```r
my code to format