choose corp tax history for admins

app/Library/Structures/StructureTaxHelper.php

@@ -34,7 +34,7 @@ class StructureTaxHelper {
         
         //Get the total taxes produced by the structure(s) over a given set of dates
         $revenue = $this->GetRevenue($corpId, $refType, $start, $end);
-        
+        $revenue = (float)$revenue;
         $totalFuelCost = $fuelCost * $count;
         var_dump($revenue);
         var_dump($totalFuelCost);