diff --git a/app.R b/app.R
index add3751..88edd49 100644
--- a/app.R
+++ b/app.R
@@ -131,14 +131,21 @@ server <- function(input, output) {
               t_maps<-generate_labstats(t_stats, t, "value", "variable", "Groups")
               dades$maps<<-t_maps
             }
-            print(t_substr)
+            if (length(unique(dades$taula[,"Groups"])) < 2){
+              dades$stats<<-1
+            }
             
-            dades$final<<-if(ctrl %in% colnames(t_substr)){t_substr %>% select(-cctrl)}else{t_substr}
-            # dades$final<<-if(ctrl %in% colnames(t_substr)){t_substr %>% select(-c(ctrl, mock))}else{t_substr %>% select(-mock)}
+            c(ctrl, mock)[c(ctrl, mock) %in% colnames(t_substr)]
+            dades$final<<-t_substr %>% select(-c(ctrl, mock)[c(ctrl, mock) %in% colnames(t_substr)])
               
             set.seed(123)
             if (input$positive == T){
-                ggplot(melt(t_substr, id=c("Mice", ctrl, "Groups")), aes(variable, value))+
+                ids=c("Mice", "Groups", c(ctrl, mock)[c(ctrl, mock) %in% colnames(t_substr)])
+                validate(
+                  need(exists("mock_mean"), "No se puede elegir positividad con múltiples mocks")
+                )
+                if (exists("mock_mean")){
+                  ggplot(melt(t_substr, id=ids), aes(variable, value))+
                     labs(x="", y="Spots/2.5*10^5 cells")+
                     # geom_errorbar(stat="summary", position=position_dodge(width=0.9), width=0.5, aes(fill=Groups))+
                     geom_hline(data=mock_mean, aes(color=Groups, yintercept = `.`))+
@@ -151,8 +158,10 @@ server <- function(input, output) {
                     geom_text(data=t_stats, aes(t_maps$label$x, t_maps$label$y, label=p.signif), color="black")+
                     theme_bw()+
                     theme(axis.text.x=element_text(angle=45, hjust=1))
+                }
+                
             }else{
-                ids<-if(ctrl %in% colnames(t_substr)){c("Mice", ctrl, "Groups")}else{c("Mice", "Groups")}
+                ids=c("Mice", "Groups", c(ctrl, mock)[c(ctrl, mock) %in% colnames(t_substr)])
                 ggplot(melt(t_substr, id=ids), aes(variable, value))+
                     labs(x="", y="Spots/2.5*10^5 cells")+
                     # geom_errorbar(stat="summary", position=position_dodge(width=0.9), width=0.5, aes(fill=Groups))+
@@ -174,16 +183,22 @@ server <- function(input, output) {
       observeEvent(dades$stats, {})
       t_stats<-dades$stats
       if (!is.null(dades$stats)){
-        return(
-          t_stats %>%
-            flextable() %>%
-            theme_vanilla() %>%
-            fontsize(size=14, part="all") %>%
-            padding(padding=10, part="all") %>%
-            color(~ p.adj < 0.05, color = "red")%>%
-            autofit()
-        ) %>%
-          htmltools_value()
+        if (t_stats == 1){
+          validate(
+            need(t_stats == 1, "Con un sólo grupo no se puede hacer estadística")
+          )
+        }else{
+          return(
+              t_stats %>%
+                flextable() %>%
+                theme_vanilla() %>%
+                fontsize(size=14, part="all") %>%
+                padding(padding=10, part="all") %>%
+                color(~ p.adj < 0.05, color = "red")%>%
+                autofit()
+            ) %>%
+              htmltools_value()
+        }
       }
     })