diff --git a/control.lua b/control.lua
index f490a86..8e9ebf5 100644
--- a/control.lua
+++ b/control.lua
@@ -415,7 +415,7 @@ local gui_change_handlers = {
         local settings = global[event.player_index]
         event.element.slider_value = math.floor(event.element.slider_value)
         settings.x = event.element.slider_value
-        event.element.parent.artillery_bombardment_x_textbox.text = event.element.slider_value
+        event.element.parent.artillery_bombardment_x_textbox.text = tostring(event.element.slider_value)
     end,
     artillery_bombardment_x_textbox = function(event)
         local settings = global[event.player_index]
@@ -423,14 +423,14 @@ local gui_change_handlers = {
             settings.x = math.floor(tonumber(event.element.text))
             event.element.parent.artillery_bombardment_x_slider.slider_value = tonumber(event.element.text)
         elseif not tonumber(event.element.text) and string.len(event.element.text) > 0 then
-            event.element.text = settings.x or event.element.parent.artillery_bombardment_x_slider.slider_value
+            event.element.text = tostring(settings.x or event.element.parent.artillery_bombardment_x_slider.slider_value)
         end
     end,
     artillery_bombardment_y_slider = function(event)
         local settings = global[event.player_index]
         event.element.slider_value = math.floor(event.element.slider_value)
         settings.y = event.element.slider_value
-        event.element.parent.artillery_bombardment_y_textbox.text = event.element.slider_value
+        event.element.parent.artillery_bombardment_y_textbox.text = tostring(event.element.slider_value)
     end,
     artillery_bombardment_y_textbox = function(event)
         local settings = global[event.player_index]
@@ -438,14 +438,14 @@ local gui_change_handlers = {
             settings.y = math.floor(tonumber(event.element.text))
             event.element.parent.artillery_bombardment_y_slider.slider_value = tonumber(event.element.text)
         elseif not tonumber(event.element.text) and string.len(event.element.text) > 0 then
-            event.element.text = settings.y or event.element.parent.artillery_bombardment_y_slider.slider_value
+            event.element.text = tostring(settings.y or event.element.parent.artillery_bombardment_y_slider.slider_value)
         end
     end,
     artillery_bombardment_column_slider = function(event)
         local settings = global[event.player_index]
         event.element.slider_value = math.floor(event.element.slider_value)
         settings.col_count = event.element.slider_value
-        event.element.parent.artillery_bombardment_column_textbox.text = event.element.slider_value
+        event.element.parent.artillery_bombardment_column_textbox.text = tostring(event.element.slider_value)
     end,
     artillery_bombardment_column_textbox = function(event)
         local settings = global[event.player_index]
@@ -453,14 +453,14 @@ local gui_change_handlers = {
             settings.col_count = math.floor(tonumber(event.element.text))
             event.element.parent.artillery_bombardment_column_slider.slider_value = tonumber(event.element.text)
         elseif not tonumber(event.element.text) and string.len(event.element.text) > 0 then
-            event.element.text = settings.col_count or event.element.parent.artillery_bombardment_column_slider.slider_value
+            event.element.text = tostring(settings.col_count or event.element.parent.artillery_bombardment_column_slider.slider_value)
         end
     end,
     artillery_bombardment_radius_slider = function(event)
         local settings = global[event.player_index]
         event.element.slider_value = math.floor(event.element.slider_value)
         settings.radius = event.element.slider_value
-        event.element.parent.artillery_bombardment_radius_textbox.text = event.element.slider_value
+        event.element.parent.artillery_bombardment_radius_textbox.text = tostring(event.element.slider_value)
     end,
     artillery_bombardment_radius_textbox = function(event)
         local settings = global[event.player_index]
@@ -468,7 +468,7 @@ local gui_change_handlers = {
             settings.radius = math.floor(tonumber(event.element.text))
             event.element.parent.artillery_bombardment_radius_slider.slider_value = tonumber(event.element.text)
         elseif not tonumber(event.element.text) and string.len(event.element.text) > 0 then
-            event.element.text = settings.radius or event.element.parent.artillery_bombardment_radius_slider.slider_value
+            event.element.text = tostring(settings.radius or event.element.parent.artillery_bombardment_radius_slider.slider_value)
         end
     end
 }