--- a/pampa_macros.xml	Sun Nov 22 18:40:23 2020 +0000
+++ b/pampa_macros.xml	Mon Apr 26 16:05:19 2021 +0000
@@ -15,7 +15,7 @@
     </xml>
     <xml name="Plot_requirements">
         <requirements>
-            <requirement type="package" version="3.1.1">r-ggplot2</requirement>
+            <requirement type="package" version="3.3.3">r-ggplot2</requirement>
             <requirement type="package" version="1.3_25">r-boot</requirement>
         </requirements>    
     </xml>
@@ -54,7 +54,7 @@
     <xml name="pampa_input_GLM">
         <param name="input_metric" type="data" format="tabular" label="Input metrics file" help="Metrics data file, with location, year, and metrics informations that can be used as interest variable."/>
         <param name="input_unitobs" type="data" format="tabular" label="Unitobs informations file" help="Unitobs file, with all informations available about unitobs."/>
-        <param name="varint" type="data_column" data_ref="input_metric" label="Interest variable from metrics file" help= "Choose the field of the interest variable."/>
+        <param name="varint" type="data_column" data_ref="input_metric" use_header_names="true" label="Interest variable from metrics file" help= "Choose the field of the interest variable."/>
     </xml>
     <xml name="pampa_var_GLM">
         <param name="varrep" type="select" label="Response variables" help= "Choose the response variables you want to include in your analysis." multiple="true">