diff --git a/R/zoonHelpers.R b/R/zoonHelpers.R
index 04304d8..c40de71 100644
--- a/R/zoonHelpers.R
+++ b/R/zoonHelpers.R
@@ -175,7 +175,7 @@ RunModels <- function(df, modelFunction, paras, workEnv){
   # If external validation dataset exists, predict that;.
   if(0 %in% df$fold){
     
-    pred <- ZoonPredict(modelFold,
+    pred <- ZoonPredict(m,
                         newdata = df[df$fold == 0, 6:NCOL(df), drop = FALSE])
     
     dfOut$predictions[df$fold == 0] <- pred 
diff --git a/inst/doc/Module_IO_for_devs.Rmd b/inst/doc/Module_IO_for_devs.Rmd
index 53f0781..121353a 100644
--- a/inst/doc/Module_IO_for_devs.Rmd
+++ b/inst/doc/Module_IO_for_devs.Rmd
@@ -25,8 +25,8 @@ Out: df with longitude latitude value type fold
 out: raster layer or raster stack
 
 ### Process
-in: list(df with value, type, fold, lon, lat + covs, covar raster)
-out:  list(df with value, type, fold, lon, lat + covs, covar raster)
+in: list(df with value, type, fold, longitude, latitude + covs, covar raster)
+out:  list(df with value, type, fold, longitude, latitude + covs, covar raster)
 
 
 ### Model