Regrid as a level array

src/extractor/Amrex.jl

@@ -116,8 +116,8 @@ function _get_independent_variables(extractor::AbstractAmrex, parameters)::Dict{
     maxLevel = get(parameters, "amr.max_level", "")
     independentVariables["amr.max_level"] = maxLevel == "" ? 1 : parse(Int32, maxLevel)
 
-    regrid = get(parameters, "amr.regrid_int", "")
-    independentVariables["amr.regrid_int"] = regrid == "" ? 1 : parse(Int32, regrid)
+    regrid = prod(parse.(Int64, split(get(parameters, "amr.regrid_int", ["0"])))) 
+    independentVariables["amr.regrid_int"] = regrid == "" ? 1 : parse(Int64, regrid)
 
     return independentVariables