diff --git a/NAMESPACE b/NAMESPACE
index 66dda48..bc14836 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -54,6 +54,7 @@ export(format_date)
 export(format_num)
 export(heatmap_opts)
 export(label)
+export(label_value)
 export(parse_df)
 export(pie_opts)
 export(radialBar_opts)
@@ -69,7 +70,10 @@ export(set_input_zoom)
 export(set_tooltip_fixed)
 export(sparkBoxOutput)
 export(spark_box)
+export(vars)
 importFrom(ggplot2,aes)
+importFrom(ggplot2,label_value)
+importFrom(ggplot2,vars)
 importFrom(htmlwidgets,JS)
 importFrom(htmlwidgets,createWidget)
 importFrom(htmlwidgets,shinyRenderWidget)
@@ -80,7 +84,9 @@ importFrom(magrittr,"%>%")
 importFrom(rlang,"!!")
 importFrom(rlang,as_label)
 importFrom(rlang,eval_tidy)
+importFrom(rlang,is_function)
 importFrom(rlang,is_named)
+importFrom(rlang,is_null)
 importFrom(rlang,sym)
 importFrom(shiny,getDefaultReactiveDomain)
 importFrom(shiny,registerInputHandler)
diff --git a/R/apexcharter-package.R b/R/apexcharter-package.R
index b605211..22d47ff 100644
--- a/R/apexcharter-package.R
+++ b/R/apexcharter-package.R
@@ -36,6 +36,12 @@ NULL
 #' @rdname apexcharter-exports
 NULL
 
+#' @importFrom ggplot2 label_value
+#' @name label_value
+#' @export
+#' @rdname apexcharter-exports
+NULL
+
 #' @importFrom htmlwidgets JS
 #' @name JS
 #' @export
diff --git a/man/apexcharter-exports.Rd b/man/apexcharter-exports.Rd
index 63076e5..df4e95c 100644
--- a/man/apexcharter-exports.Rd
+++ b/man/apexcharter-exports.Rd
@@ -4,6 +4,8 @@
 \alias{apexcharter-exports}
 \alias{\%>\%}
 \alias{aes}
+\alias{vars}
+\alias{label_value}
 \alias{JS}
 \title{apexcharter exported operators and S3 methods}
 \description{