fires before merged cells are split

void onBeforeSplit(number row,number column,array value){ ... };


rownumberthe number of the row that the span starts with
columnnumberthe number of the column that the span starts with
valuearraythe array with values of the deleted span


$$("ssheet").attachEvent("onBeforeSplit", function(row, column, value){
    // some code here
    return true;


return false to block cell's splitting

See also
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