setColumnLabel

sets a new column header label

colIndex	number	the index of the header column
label	string	a text for a new column header label
rowIndex	number	the index of the header row (the default one is 1)

Example

// set a new label for the first column
mygrid.setColLabel(0,"New Column Label");
// set a new label for the second line of the first column
mygrid.setColLabel(0,"New Column Label",1);

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