diff --git a/R/geoflow_action_geometa_create_iso_19110.R b/R/geoflow_action_geometa_create_iso_19110.R
index 6c1e09a..4223379 100644
--- a/R/geoflow_action_geometa_create_iso_19110.R
+++ b/R/geoflow_action_geometa_create_iso_19110.R
@@ -155,6 +155,8 @@ geometa_create_iso_19110 <- function(entity, config, options){
     fat$setDefinition(fat_attr$def)
     minOccurs <- default_min_occurs; if(!is.null(fat_attr)) minOccurs <- fat_attr$minOccurs
     maxOccurs <- default_max_occurs; if(!is.null(fat_attr)) maxOccurs <- fat_attr$maxOccurs
+    if(is.null(minOccurs)) minOccurs <- default_min_occurs
+    if(is.null(maxOccurs)) maxOccurs <- default_max_occurs
     if(maxOccurs == "Inf") maxOccurs <- Inf
     fat$setCardinality(lower = minOccurs, upper = maxOccurs)
     #code
diff --git a/R/geoflow_featuremember.R b/R/geoflow_featuremember.R
index 4b025ed..e285fe4 100644
--- a/R/geoflow_featuremember.R
+++ b/R/geoflow_featuremember.R
@@ -32,11 +32,11 @@ geoflow_featuremember <- R6Class("geoflow_featuremember",
      name = NULL,
      def = NULL,
      defSource = NULL,
-     minOccurs = 1L,
-     maxOccurs = 1L,
+     minOccurs = NULL,
+     maxOccurs = NULL,
      registerId = NULL,
      initialize = function(type, code, name, def, defSource = NULL,
-                           minOccurs = 1L, maxOccurs = 1L,
+                           minOccurs = NULL, maxOccurs = NULL,
                            registerId = NULL){
        if(!type %in% c("attribute", "variable")){
          stop("The member type should be either 'attribute' or 'variable'")