[Minor] Stock Entry Fix (#7715)

diff --git a/erpnext/stock/doctype/stock_entry/stock_entry.js b/erpnext/stock/doctype/stock_entry/stock_entry.js
index ed044a9..cc867a8 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry.js
+++ b/erpnext/stock/doctype/stock_entry/stock_entry.js
@@ -510,7 +510,7 @@
 				doc.supplier_name = doc.supplier_address = doc.purchase_receipt_no = null;
 		}
 		if(doc.purpose == "Material Receipt") {
-			frm.set_value("from_bom", 0);
+			this.frm.set_value("from_bom", 0);
 		}
 
 		// Addition costs based on purpose