diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Creator.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Creator.java
index d9a072db0..d10520573 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Creator.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Creator.java
@@ -29,4 +29,19 @@ public class Creator {
 	public void setOrcid(String orcid) {
 		this.orcid = orcid;
 	}
+
+	public static Creator newInstance(String name, String affiliation, String orcid) {
+		Creator c = new Creator();
+		if (!(name == null)) {
+			c.name = name;
+		}
+		if (!(affiliation == null)) {
+			c.affiliation = affiliation;
+		}
+		if (!(orcid == null)) {
+			c.orcid = orcid;
+		}
+
+		return c;
+	}
 }
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Grant.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Grant.java
index 712644cde..c9e81846d 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Grant.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/zenodo/Grant.java
@@ -13,4 +13,11 @@ public class Grant implements Serializable {
 	public void setId(String id) {
 		this.id = id;
 	}
+
+	public static Grant newInstance(String id) {
+		Grant g = new Grant();
+		g.id = id;
+
+		return g;
+	}
 }