[C++ Error] wave.cpp(69): E2110 Incompatible type conversion 报错问题

[Khada_Bhin]

int i=0;
int y=0;
if(MSComm1->InBufferCount)
        {
                s=MSComm1->Input;
                str=s.AsType(varString);file:
                LastTemp=str.SubString(str.Pos("\a")+1,str.LastDelimiter("\r"));
                //while(LastTemp.Pos("\r")+1 != LastTemp.LastDelimiter("\r"));
                  while(LastTemp !="\r")
                {
                        row=LastTemp.SubString(0,LastTemp.Pos("\r"));
                        wave=row.SubString(0,row.Pos("\t")-1);
                        iwave[i++]=StrToFloat(wave);
                        value=row.SubString(row.Pos(" ")+2,(row.Pos("\r")-1));
                        value=value.SubString(0,value.Pos("\r")-1);
                        ivalue[i++]=StrToInt(value);
                        LastTemp=LastTemp.SubString(LastTemp.Pos("\r")+1,LastTemp.LastDelimiter("\r"));
                }
        }
        Timer1->Enabled=false;
        Series1->AddArray(iwave[y],ivalue[y]);  //提示这边有问题，其中iwave得到的是浮点型变量
        y++;

[Khada_Bhin]

有大神帮忙看下嘛