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-rw-r--r--src/fields/Doc.ts2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/fields/Doc.ts b/src/fields/Doc.ts
index 3ea53a9e0..87acb2ea7 100644
--- a/src/fields/Doc.ts
+++ b/src/fields/Doc.ts
@@ -1235,7 +1235,7 @@ Scripting.addGlobal(function getProto(doc: any) { return Doc.GetProto(doc); });
Scripting.addGlobal(function getDocTemplate(doc?: any) { return Doc.getDocTemplate(doc); });
Scripting.addGlobal(function getAlias(doc: any) { return Doc.MakeAlias(doc); });
Scripting.addGlobal(function getCopy(doc: any, copyProto: any) { return doc.isTemplateDoc ? Doc.ApplyTemplate(doc) : Doc.MakeCopy(doc, copyProto); });
-Scripting.addGlobal(function copyField(field: any) { return ObjectField.MakeCopy(field); });
+Scripting.addGlobal(function copyField(field: any) { return field instanceof ObjectField ? ObjectField.MakeCopy(field) : field; });
Scripting.addGlobal(function aliasDocs(field: any) { return Doc.aliasDocs(field); });
Scripting.addGlobal(function docList(field: any) { return DocListCast(field); });
Scripting.addGlobal(function setInPlace(doc: any, field: any, value: any) { return Doc.SetInPlace(doc, field, value, false); });