diff --git a/Jenkinsfile b/Jenkinsfile
index 909d7a5..1b74429 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -17,7 +17,7 @@ pipeline {
 
       /* calcolo numero versione... diverso x branch MASTER/DEVELOP */
       script {
-        withEnv(['NEXT_BUILD_NUMBER=228']) {
+        withEnv(['NEXT_BUILD_NUMBER=229']) {
           // env.versionNumber = VersionNumber(versionNumberString : '0.9.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2019-07-01', skipFailedBuilds: true)
           env.versionNumber = VersionNumber(versionNumberString : '0.9.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2019-07-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
           env.versionNumberBeta = VersionNumber(versionNumberString : '0.9.${BUILD_DATE_FORMATTED, "yyMM"}-beta.${BUILDS_ALL_TIME}', projectStartDate : '2019-07-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
diff --git a/NKC_WF/WebUserControls/cmp_slider.ascx.cs b/NKC_WF/WebUserControls/cmp_slider.ascx.cs
index 4523dbc..e95c242 100644
--- a/NKC_WF/WebUserControls/cmp_slider.ascx.cs
+++ b/NKC_WF/WebUserControls/cmp_slider.ascx.cs
@@ -11,7 +11,6 @@ namespace NKC_WF.WebUserControls
   {
     protected void Page_Load(object sender, EventArgs e)
     {
-
     }
 
     protected void txtSlider_TextChanged(object sender, EventArgs e)
@@ -30,6 +29,15 @@ namespace NKC_WF.WebUserControls
         int.TryParse(txtSlider.Text, out answ);
         return answ;
       }
+      set
+      {
+        // lo imposto sapendo che è fondoscala a 100!
+        txtSlider.Text = value.ToString();
+      }
     }
+    /// <summary>
+    /// Fondoscale (hard coded...)
+    /// </summary>
+    public int resolution = 100;
   }
 }
\ No newline at end of file
diff --git a/NKC_WF/site/BatchPreview.aspx.cs b/NKC_WF/site/BatchPreview.aspx.cs
index 7c779b7..16168fc 100644
--- a/NKC_WF/site/BatchPreview.aspx.cs
+++ b/NKC_WF/site/BatchPreview.aspx.cs
@@ -46,14 +46,21 @@ namespace NKC_WF.site
 
     private void Cmp_BP_sheetList_eh_doRefresh(object sender, EventArgs e)
     {
+      int numBunk = cmp_BP_bunkList.numBunks;
+      cmp_slider.selValue = (100 * (cmp_BP_bunkList.selIndex) / numBunk) + ((cmp_BP_sheetList.selIndex * 100) / (cmp_BP_sheetList.numSheets * numBunk));
       // imposto sheet sul foglio...
       cmp_MU_svgViewer.SheetId = cmp_BP_sheetList.SheetIdSel;
     }
 
     private void Cmp_BP_bunkList_eh_doRefresh(object sender, EventArgs e)
     {
+      // fix selezione slider...
+      int numBunk = cmp_BP_bunkList.numBunks;
+      cmp_slider.selValue = 100 * (cmp_BP_bunkList.selIndex) / numBunk;
       // aggiorno sheets
       cmp_BP_sheetList.BunkId = cmp_BP_bunkList.BunkIdSel;
+      cmp_BP_sheetList.selIndex = 0;
+      cmp_MU_svgViewer.SheetId = cmp_BP_sheetList.SheetIdSel;
     }
 
     protected int bunkIndex