Fix should provide array on algo param value

api/src/engine/connectors/exareme/transformations.ts

@@ -52,7 +52,7 @@ export const transformToExperiment = jsonata(`
                 algorithm.parameters[$not(name in $params)].({
                     "name": name,
                     "label": label,
-                    "value": value
+                    "value": $split(value, ',')
                 })
         }
     }

api/src/schema.gql

@@ -86,9 +86,9 @@ type GroupsResult {
 
 type HeatMapResult {
   name: String!
+  xAxis: ChartAxis
+  yAxis: ChartAxis
   matrix: [[Float!]!]!
-  xAxis: ChartAxis!
-  yAxis: ChartAxis!
 }
 
 type LineChartResult {