if variable i = zero then change row j of the same row to 0 - table

So I have a 5007717 x 16 Table and I changed all negative value of column 16 to zero. But now if column 16 is zero I want to change columne 3 of the same row to zero.

SO I tried things like

for i = 1:5007717

if pvdaqdata10(i,16) == 0

pvdaqdata10(i,3) = 0 ;

end

end

but it does'nt seem to work with table

Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='.

Operator '==' is not supported for operands of type 'table'.

So my question is, how in a table do you change the value of a cell with respect to the value of a other cell of the same row and do that for each row ?

Thanks for your help

Regards

Answer 1

[David Fletcher]

col16zero=(pvdaqdata10{:,16}==0)
pvdaqdata10{col16zero,3}=0