diff --git a/db/cursor.php b/db/cursor.php
index 6edbc0e0..f007daaa 100644
--- a/db/cursor.php
+++ b/db/cursor.php
@@ -96,11 +96,11 @@ abstract function update();
 	abstract function copyfrom($var,$func=NULL);
 
 	/**
-	*	Populate hive array variable with mapper fields
+	*	Populate array variable with mapper fields
 	*	@return NULL
-	*	@param $key string
+	*	@param $var mixed
 	**/
-	abstract function copyto($key);
+	abstract function copyto(&$var);
 
 	/**
 	*	Get cursor's equivalent external iterator
diff --git a/db/jig/mapper.php b/db/jig/mapper.php
index 52f36acb..79e24924 100644
--- a/db/jig/mapper.php
+++ b/db/jig/mapper.php
@@ -497,12 +497,13 @@ function copyfrom($var,$func=NULL) {
 	}
 
 	/**
-	*	Populate hive array variable with mapper fields
+	*	Populate array variable with mapper fields
 	*	@return NULL
-	*	@param $key string
+	*	@param $var mixed
 	**/
-	function copyto($key) {
-		$var=&\Base::instance()->ref($key);
+	function copyto(&$var) {
+		if (is_string($var))
+			$var=&\Base::instance()->ref($key);
 		foreach ($this->document as $key=>$field)
 			$var[$key]=$field;
 	}
diff --git a/db/mongo/mapper.php b/db/mongo/mapper.php
index d5645412..f12dc65e 100644
--- a/db/mongo/mapper.php
+++ b/db/mongo/mapper.php
@@ -347,12 +347,13 @@ function copyfrom($var,$func=NULL) {
 	}
 
 	/**
-	*	Populate hive array variable with mapper fields
+	*	Populate array variable with mapper fields
 	*	@return NULL
-	*	@param $key string
+	*	@param $var mixed
 	**/
-	function copyto($key) {
-		$var=&\Base::instance()->ref($key);
+	function copyto($var) {
+		if (is_string($var))
+			$var=&\Base::instance()->ref($key);
 		foreach ($this->document as $key=>$field)
 			$var[$key]=$field;
 	}
diff --git a/db/sql/mapper.php b/db/sql/mapper.php
index 9519cfab..3c65ff9f 100644
--- a/db/sql/mapper.php
+++ b/db/sql/mapper.php
@@ -603,12 +603,13 @@ function copyfrom($var,$func=NULL) {
 	}
 
 	/**
-	*	Populate hive array variable with mapper fields
+	*	Populate array variable with mapper fields
 	*	@return NULL
-	*	@param $key string
+	*	@param $var mixed
 	**/
-	function copyto($key) {
-		$var=&\Base::instance()->ref($key);
+	function copyto(&$var) {
+		if (is_string($var))
+			$var=&\Base::instance()->ref($var);
 		foreach ($this->fields+$this->adhoc as $key=>$field)
 			$var[$key]=$field['value'];
 	}