优化后，我想将4维变量数组的一部分存储到嵌套字典中。有没有办法做到这一点？

我的数组inventory看起来像这样：

4-dimensional DenseAxisArray{VariableRef,4,...} with index sets:
    Dimension 1,["P1","P2"]
    Dimension 2,["AMS","BOM","BSL","BWI","CDG","CPHA","DUBA","FCO","GRU","HND"  …  "MXP","NRT","PHL","QWU","rcs","SIN","SJU","TLV","VIE","YYZ"]
    Dimension 3,["USx","halfEURO","EUROx","XLx","TWINx"]
    Dimension 4,["g","b"]

我只需要P2和g的嵌套字典，如下所示：

a = Dict("AMS" => Dict("USx"=>[value],"halEURO"=>[value],… ))

我尝试在for循环中执行此操作，但失败了。

谢谢您的帮助！