qt 导出word，行间距修改

QT导出word，在word中插入一个表格，在表格中加入本文，如何通过代码对表格进行 行间距的设定更改，希望可以帮忙解答
自己写了一下 但是没有作用

table->querySubObject("Cell(int, int)",nStartRow,nStartCol)->querySubObject("Select");
QAxObject* selection = m_word->querySubObject("Selection");
int rowcount = nEndRow - nStartRow;
int columncount = nEndCol - nStartCol;
selection->dynamicCall("MoveDown","wdRow",rowcount,"wdExtend");
selection->dynamicCall("MoveRight","wdColumn",columncount,"wdExtend");
QAxObject * paragraph = selection->querySubObject("Paragraphs(int)",1);
paragraph->setProperty("LineSpacingRule","wdLineSpaceMultiple");
paragraph->setProperty("LineSpacing",0);