GetIndustryBySymbolAndId取板块信息取不到值

Range[0:DataCount-1] { if(BarStatus == 0) { bar_count = 0; } bar_count = bar_count + 1; if(bar_count==500) { GetIndustryBySymbolAndId(Symbol, indnamebysymbol, indid, indName); GetSymbolByIndustryId("F101007", industrySymbols); Print("有色金属板块共"+Text(GetArraySize(industrySymbols))+"个合约"); PlotBool("500:",true); Commentary("IndustryName:" +IndustryName("F101007")); Commentary("Symbol:" + Symbol); Commentary("indnamebysymbol:" + indnamebysymbol); Commentary("indName:" + TextArray(indName)); Commentary("indid:" + TextArray(indid)); Commentary("indName:" + TextArray(indName)); } }