diff --git a/gui/devices/800x1280/res/ui.xml b/gui/devices/800x1280/res/ui.xml
index 328b31f..b074931 100644
--- a/gui/devices/800x1280/res/ui.xml
+++ b/gui/devices/800x1280/res/ui.xml
@@ -58,24 +58,25 @@
 		<variable name="row4_y" value="905" />
 		<variable name="row_queue_y" value="710" />
 		<variable name="row1_header_y" value="131" />
+		<variable name="text_row_height" value="50" />
 		<variable name="row1_text_y" value="170" />
-		<variable name="row2_text_y" value="220" />
-		<variable name="row3_text_y" value="270" />
-		<variable name="row4_text_y" value="320" />
-		<variable name="row5_text_y" value="370" />
-		<variable name="row6_text_y" value="420" />
-		<variable name="row7_text_y" value="470" />
-		<variable name="row8_text_y" value="520" />
-		<variable name="row9_text_y" value="570" />
-		<variable name="row10_text_y" value="620" />
-		<variable name="row11_text_y" value="670" />
-		<variable name="row12_text_y" value="720" />
-		<variable name="row13_text_y" value="770" />
-		<variable name="row14_text_y" value="820" />
-		<variable name="row15_text_y" value="870" />
-		<variable name="row16_text_y" value="920" />
-		<variable name="row17_text_y" value="970" />
-		<variable name="row18_text_y" value="1020" />
+		<variable name="row2_text_y" value="%row1_text_y%+%text_row_height%" />
+		<variable name="row3_text_y" value="%row2_text_y%+%text_row_height%" />
+		<variable name="row4_text_y" value="%row3_text_y%+%text_row_height%" />
+		<variable name="row5_text_y" value="%row4_text_y%+%text_row_height%" />
+		<variable name="row6_text_y" value="%row5_text_y%+%text_row_height%" />
+		<variable name="row7_text_y" value="%row6_text_y%+%text_row_height%" />
+		<variable name="row8_text_y" value="%row7_text_y%+%text_row_height%" />
+		<variable name="row9_text_y" value="%row8_text_y%+%text_row_height%" />
+		<variable name="row10_text_y" value="%row9_text_y%+%text_row_height%" />
+		<variable name="row11_text_y" value="%row10_text_y%+%text_row_height%" />
+		<variable name="row12_text_y" value="%row11_text_y%+%text_row_height%" />
+		<variable name="row13_text_y" value="%row12_text_y%+%text_row_height%" />
+		<variable name="row14_text_y" value="%row13_text_y%+%text_row_height%" />
+		<variable name="row15_text_y" value="%row14_text_y%+%text_row_height%" />
+		<variable name="row16_text_y" value="%row15_text_y%+%text_row_height%" />
+		<variable name="row17_text_y" value="%row16_text_y%+%text_row_height%" />
+		<variable name="row18_text_y" value="%row17_text_y%+%text_row_height%" />
 		<variable name="zip_status_y" value="640" />
 		<variable name="tz_selected_y" value="160" />
 		<variable name="tz_set_y" value="955" />
diff --git a/gui/pages.cpp b/gui/pages.cpp
index 1bc15c6..72ffda3 100644
--- a/gui/pages.cpp
+++ b/gui/pages.cpp
@@ -783,7 +783,32 @@
 		if(name && value)
 		{
 			p = persist ? atoi(persist->value()) : 0;
-			DataManager::SetValue(name->value(), value->value(), p);
+			string temp = value->value();
+			string valstr = gui_parse_text(temp);
+
+			if (valstr.find("+") != string::npos) {
+				string val1str = valstr;
+				val1str = val1str.substr(0, val1str.find('+'));
+				string val2str = valstr;
+				val2str = val2str.substr(val2str.find('+') + 1, string::npos);
+				int val1 = atoi(val1str.c_str());
+				int val2 = atoi(val2str.c_str());
+				int val = val1 + val2;
+
+				DataManager::SetValue(name->value(), val, p);
+			} else if (valstr.find("-") != string::npos) {
+				string val1str = valstr;
+				val1str = val1str.substr(0, val1str.find('-'));
+				string val2str = valstr;
+				val2str = val2str.substr(val2str.find('-') + 1, string::npos);
+				int val1 = atoi(val1str.c_str());
+				int val2 = atoi(val2str.c_str());
+				int val = val1 - val2;
+
+				DataManager::SetValue(name->value(), val, p);
+			} else {
+				DataManager::SetValue(name->value(), valstr, p);
+			}
 		}
 
 		child = child->next_sibling("variable");