I am trying to perpare a ML tutorial where there are T balls in a bag with a ratio of P=0.75 black balls and there will be 250 independent trials where 0<X<10 randomly chosen balls from the bag will show Y blacks. I create a new data set with 250 observations and create X with genr X = floor(randgen(u,0,11) After this, however, the command genr Y = randgen(b,0.75,X) does not work. Any suggestions? Also a few bugs/problems that I have discovered along the way: 1)- Creating a binomial random does not work from the GUI. After creating a cross-sectional 50, Add --> Random variable and selecting binomial, I enter 0.5 10 and xx in the three boxes and clicking OK gives an empty error dialog box. 2)- I open the scalars window and if I first click on the name column, enter something and then click on the value column (or an empty pert of the window) I get the error: 'cc' -- no numeric conversion performed! 3)- If I do the above twice three times etc., the error message is also repeated twice, three times etc. (as rows within a single error window). 4)- If I keep pressing the add button, the scalars window will be filled with epmty rows of empty scalars with no x buttons to erase them. 5)- With the first row being empty, if I enter a value in the second row and click on its name cell, there is an error message in the console: *** gretl_scalar_add: there's already a '' at level 0 (1,79769313486232e+308) 6)- Because the scalars window is now modal in the cvs, everything is frozen when it remains open. I cannot even quit gretl without first closing the scalars window. It is as if the program has crashed. Similarly, after running a ml estimation from the GUI, the scalars window is opened automatically but since everything is frozen, it is not possible to scroll down the model estimation window even. I really hope the syncronization code solving these problems will be added soon. Best regards Talha -- “Remember not only to say the right thing in the right place, but far more difficult still, to leave unsaid the wrong thing at the tempting moment.” - Benjamin Franklin (1706-1790) --