diff --git a/calculation-engine/engine-evaluation/src/main/java/com/dataart/spreadsheetanalytics/engine/graph/PoiExecutionGraphBuilder.java b/calculation-engine/engine-evaluation/src/main/java/com/dataart/spreadsheetanalytics/engine/graph/PoiExecutionGraphBuilder.java
index <HASH>..<HASH> 100644
--- a/calculation-engine/engine-evaluation/src/main/java/com/dataart/spreadsheetanalytics/engine/graph/PoiExecutionGraphBuilder.java
+++ b/calculation-engine/engine-evaluation/src/main/java/com/dataart/spreadsheetanalytics/engine/graph/PoiExecutionGraphBuilder.java
@@ -309,8 +309,6 @@ public class PoiExecutionGraphBuilder implements IExecutionGraphBuilder {
                     ExecutionGraphVertex ivertex = state.dgraph.getEdgeSource(edge);

                     buildFormula(ivertex, state);

                 }

-                vertex.formula.formulaPtgStr("");

-                vertex.formula.ptgStr("");

                 return CellFormulaExpression.copyOf(vertex.formula);

             }

             case RANGE: {
PTG strings are built in POI