Fix formatted strings
diff --git a/ecommons/org.eclipse.statet.ecommons.coremisc/src/org/eclipse/statet/ecommons/variables/core/VariableUtils.java b/ecommons/org.eclipse.statet.ecommons.coremisc/src/org/eclipse/statet/ecommons/variables/core/VariableUtils.java
index 0a10d0b..3b6a05a 100644
--- a/ecommons/org.eclipse.statet.ecommons.coremisc/src/org/eclipse/statet/ecommons/variables/core/VariableUtils.java
+++ b/ecommons/org.eclipse.statet.ecommons.coremisc/src/org/eclipse/statet/ecommons/variables/core/VariableUtils.java
@@ -59,7 +59,7 @@
 			final String name) {
 		final @Nullable TVariable variable= variables.get(name);
 		if (variable == null) {
-			throw new RuntimeException(String.format("Required variable '$1%s' is missing", name));
+			throw new RuntimeException(String.format("Required variable '%1$s' is missing", name));
 		}
 		return variable;
 	}