diff --git a/pipelines/params/operational_variable_ranges.yaml b/pipelines/params/operational_variable_ranges.yaml
index 5f422f2..1a34384 100644
--- a/pipelines/params/operational_variable_ranges.yaml
+++ b/pipelines/params/operational_variable_ranges.yaml
@@ -15,6 +15,9 @@ operational_range:
     FlowRate_ccs : 
       lower_lim : 1.23 
       upper_lim : 1.45 
+      ### TODO: For this variable we want to define the range as a percentage around the alias variable &flow_ref_correct defined in the other
+      ### yaml file. 
+
 
     FilamentEmission_mA : 
       lower_lim : 0.65