diff --git a/invivos/app.R b/invivos/app.R
index 750ba67..90a1b95 100755
--- a/invivos/app.R
+++ b/invivos/app.R
@@ -13,6 +13,7 @@ ui <- fluidPage(
               tabPanel("Diseño",
                 sidebarPanel(
                   fileInput(inputId = "file_sizes", label = "Hoja de tamaños", multiple = F),
+                  selectInput(inputId = "measure_sys", "Sistema de medida", selected = "L-W-D", choices = c("L-W-D","Min-Max","Absorbance")),
                   sliderInput("ncages", "Cajas", min=1, max=10, value=1),
                   downloadButton("downloadData", "Descargar Excel")
                   )
@@ -42,10 +43,16 @@ server <- function(input, output) {
       template["Group"]<-""
       template<-rbind(template, template, template)
       template<-template[order(template$Timepoint, template$Cage, template$`ID animal`, template$`ID tumor`),]
-      template["TS"]<-rep(c("TS-Length", "TS-Width", "TS-Deep"), nrow(template)/3)
-      dtemplate<-dcast(template, Cage+`ID animal`+`ID tumor`+Group+TS~Timepoint)
+      if (input$measure_sys == "L-W-D"){
+        template["TS"]<-rep(c("TS-Length", "TS-Width", "TS-Deep"), nrow(template)/3)
+        dtemplate<-dcast(template, Cage+`ID animal`+`ID tumor`+Group+TS~Timepoint) 
+      }
+      if (input$measure_sys == "Min-Max"){
+        template["DPV"]<-rep(c("Major", "Minor"), nrow(template)/2)
+        dtemplate<-dcast(template, Cage+`ID animal`+`ID tumor`+Group+DPV~Timepoint)  
+      }
+      
       dtemplate[,6:ncol(dtemplate)]<-""
-      print(dtemplate)
       write.xlsx(dtemplate,file)
     }
   )