diff --git a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/cumulative_sum.ts b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/cumulative_sum.ts
index 07ed7eceb9930..3b470da64c5c2 100644
--- a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/cumulative_sum.ts
+++ b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/cumulative_sum.ts
@@ -33,7 +33,7 @@ export const convertToCumulativeSumColumns = (
   // lens supports cumulative sum for count and sum as quick function
   // and everything else as formula
   if (subFunctionMetric.type !== 'count' && pipelineAgg.name !== 'sum') {
-    const metaValue = Number(meta?.replace(']', ''));
+    const metaValue = Number(meta?.replace(/\]/g, ''));
     formula = getPipelineSeriesFormula(metric, metrics, subFunctionMetric, {
       metaValue,
       reducedTimeRange,
diff --git a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/formula.ts b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/formula.ts
index cd0a3a62a8dd5..a1a42c12a64fa 100644
--- a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/formula.ts
+++ b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/formula.ts
@@ -66,7 +66,7 @@ const convertFormulaScriptForPercentileAggs = (
 ) => {
   variables.forEach((variable) => {
     const [_, meta] = variable?.field?.split('[') ?? [];
-    const metaValue = Number(meta?.replace(']', ''));
+    const metaValue = Number(meta?.replace(/\]/g, ''));
     if (!metaValue) {
       return;
     }
@@ -163,7 +163,7 @@ export const convertOtherAggsToFormulaColumn = (
   const metric = metrics[metrics.length - 1];
   const [fieldId, meta] = metric?.field?.split('[') ?? [];
   const subFunctionMetric = metrics.find(({ id }) => id === fieldId);
-  const metaValue = meta ? Number(meta?.replace(']', '')) : undefined;
+  const metaValue = meta ? Number(meta?.replace(/\]/g, '')) : undefined;
 
   if (!subFunctionMetric) {
     return null;
diff --git a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/parent_pipeline.ts b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/parent_pipeline.ts
index 5ac5701eef6c7..e617ef70c5da2 100644
--- a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/parent_pipeline.ts
+++ b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/convert/parent_pipeline.ts
@@ -235,7 +235,7 @@ const convertMovingAvgOrDerivativeToColumns = (
   if (!pipelineAgg) {
     return null;
   }
-  const metaValue = Number(meta?.replace(']', ''));
+  const metaValue = Number(meta?.replace(/\]/g, ''));
   const subMetricField = subFunctionMetric.field;
   const [nestedFieldId, _] = subMetricField?.split('[') ?? [];
   // support nested aggs with formula
diff --git a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/filter_ratio_formula.ts b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/filter_ratio_formula.ts
index 22cd37255b59e..813f28d4b6924 100644
--- a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/filter_ratio_formula.ts
+++ b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/filter_ratio_formula.ts
@@ -14,7 +14,7 @@ import { addAdditionalArgs } from '.';
 import { AdditionalArgs } from '../../types';
 
 const escapeQuotes = (str: string) => {
-  return str?.replace(/'/g, "\\'");
+  return str?.replace(/\\/g, '\\\\').replace(/'/g, "\\'");
 };
 
 const constructFilterRationFormula = (
diff --git a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/metrics_helpers.ts b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/metrics_helpers.ts
index da5e9e8cffb35..14e1b66df1e26 100644
--- a/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/metrics_helpers.ts
+++ b/src/plugins/vis_types/timeseries/public/convert_to_lens/lib/metrics/metrics_helpers.ts
@@ -113,7 +113,7 @@ export const getFormulaEquivalent = (
       }
 
       return getPipelineSeriesFormula(currentMetric, metrics, subFunctionMetric, {
-        metaValue: nestedMetaValue ? Number(nestedMetaValue?.replace(']', '')) : undefined,
+        metaValue: nestedMetaValue ? Number(nestedMetaValue?.replace(/\]/g, '')) : undefined,
         reducedTimeRange,
         timeShift,
       });