diff --git a/crates/eww/src/config/eww_config.rs b/crates/eww/src/config/eww_config.rs
index 0e766b8..b44f102 100644
--- a/crates/eww/src/config/eww_config.rs
+++ b/crates/eww/src/config/eww_config.rs
@@ -21,7 +21,8 @@ pub struct EwwConfig {
 impl EwwConfig {
     pub fn read_from_file(files: &mut YuckFiles, path: impl AsRef<Path>) -> Result<Self> {
         let config = Config::generate_from_main_file(files, path)?;
-        let Config { widget_definitions, window_definitions, var_definitions, script_vars } = config;
+        let Config { widget_definitions, window_definitions, var_definitions, mut script_vars } = config;
+        script_vars.extend(crate::config::inbuilt::get_inbuilt_vars());
         Ok(EwwConfig {
             windows: window_definitions
                 .into_iter()
diff --git a/crates/simplexpr/src/eval.rs b/crates/simplexpr/src/eval.rs
index 4b710f8..5ee736e 100644
--- a/crates/simplexpr/src/eval.rs
+++ b/crates/simplexpr/src/eval.rs
@@ -165,9 +165,9 @@ impl SimplExpr {
                     BinOp::NotEquals => DynVal::from(a != b),
                     BinOp::And => DynVal::from(a.as_bool()? && b.as_bool()?),
                     BinOp::Or => DynVal::from(a.as_bool()? || b.as_bool()?),
-                    BinOp::Plus => match a.as_f64() {
-                        Ok(num) => DynVal::from(num + b.as_f64()?),
-                        Err(_) => DynVal::from(format!("{}{}", a.as_string()?, b.as_string()?)),
+                    BinOp::Plus => match (a.as_f64(), b.as_f64()) {
+                        (Ok(a), Ok(b)) => DynVal::from(a + b),
+                        _ => DynVal::from(format!("{}{}", a.as_string()?, b.as_string()?)),
                     },
                     BinOp::Minus => DynVal::from(a.as_f64()? - b.as_f64()?),
                     BinOp::Times => DynVal::from(a.as_f64()? * b.as_f64()?),
diff --git a/examples/eww-bar/eww.yuck b/examples/eww-bar/eww.yuck
new file mode 100644
index 0000000..8b203ed
--- /dev/null
+++ b/examples/eww-bar/eww.yuck
@@ -0,0 +1,63 @@
+(defwidget bar []
+ (box :orientation "h" :hexpand true
+  (workspaces)
+  (music)
+  (sidestuff)))
+
+(defwidget sidestuff []
+ (box :class "sidestuff" :orientation "h" :space-evenly false :halign "end"
+  (slider-vol)
+  (slider-ram)
+  (time)))
+
+(defwidget workspaces []
+ (box :class "workspaces" :orientation "h" :space-evenly true :halign "start"
+  (button :onclick "wmctrl -s 0" 1)
+  (button :onclick "wmctrl -s 1" 2)
+  (button :onclick "wmctrl -s 2" 3)
+  (button :onclick "wmctrl -s 3" 4)
+  (button :onclick "wmctrl -s 4" 5)
+  (button :onclick "wmctrl -s 5" 6)
+  (button :onclick "wmctrl -s 6" 7)
+  (button :onclick "wmctrl -s 7" 8)
+  (button :onclick "wmctrl -s 8" 9)))
+
+(defwidget music []
+ (box :class "music" :orientation "h" :space-evenly false :halign "center"
+  ;{ "  " + music}))
+  {music}))
+
+(defwidget slider-vol []
+ (box :class "slider-vol" :orientation "h" :space-evenly "false"
+  (box :class "label-vol" ""
+   (scale :min 0 :max 101 :value volume :onchange "amixer -D pulse sset Master {}%"))))
+
+(defwidget slider-ram []
+ (box :orientation "h" :class "slider-ram" :space-evenly false
+  (box :class "label-ram" ""
+   (scale :min 0 :max 101 :active false :value EWW_RAM))))
+
+
+(defwidget time []
+ (box :class "time"
+  {hour + ":" + min + " " + month + " " + number_day + ", " + year_full}))
+
+
+(defpoll music :interval "5s" "playerctl metadata --format '{{ artist }} - {{ title }}' || true")
+(defpoll volume :interval "16s" "scripts/getvol")
+
+(defpoll number_day :interval "5h" "date '+%d'")
+(defpoll month :interval "10h" "date '+%b'")
+(defpoll min :interval "10s" "date '+%M'")
+(defpoll hour :interval "1m" "date '+%H'")
+(defpoll year_full :interval "15h" "date '+%Y'")
+
+(deflisten battery-remaining "/sys/class/power_supply/BAT0/capacity")
+
+(defwindow bar
+           :screen 0
+           :focusable true
+           :windowtype "dock"
+           :geometry (geometry :x "0%" :y "0%" :width "100%" :height "4%")
+           :reserve (struts :side "top" :distance "4%")
+ (bar))