Limit dice rolls? Add points when clicking a "dice" as background Image on button?

[Taylor]

I have to do a project where there are 5 die, and each player gets 3 rolls per turn. The player then hits cmdPlayer1Roll, which randomizes the die 1-5. The player can randomize the die 3 time but at the end of the 3 rolls they need to have selected 3 numbers from the die. The first player to 1000 wins. I have to what i believe, successfully coded the randomize on the click of cmdPlayer1roll.
Here is a very fast gyazo gif of what i have coded overall, http://gyazo.com/0dfe67c781a8cec 7ce629db303deb5 9e
This is the code i used for randomize: (repeated 5 times, 5 dice button boxes/5 dice to roll 3 times)

        'randomize cmdDice1 background image
        Call Randomize()
        lowernum = 1
        upperNum = 6
        die1 = Int(Rnd() * (upperNum - lowernum + 1)) + lowernum
        If die1 = 1 Then
            cmdDice1.BackgroundImage = My.Resources.dice1Dot
        ElseIf die1 = 2 Then
            cmdDice1.BackgroundImage = My.Resources.dice2Dot1

        ElseIf die1 = 3 Then
            cmdDice1.BackgroundImage = My.Resources.dice3Dot
        ElseIf die1 = 4 Then
            cmdDice1.BackgroundImage = My.Resources.dice4Dot
        ElseIf die1 = 5 Then
            cmdDice1.BackgroundImage = My.Resources.dice5Dot
        ElseIf die1 = 6 Then
            cmdDice1.BackgroundImage = My.Resources.dice6Dot
        End If

I have 2 issues, here they are:

1.) I am struggling to determine where and how to add in the limit of rolls. Today i just learned counters, though i do not know how to go about saying a buttonclick is a roll. Here is my attempt

  Private Sub cmdPlayer1Roll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdPlayer1Roll.Click

        'Attempt at limiting rolls to 3 for player 1 
        lowernum = 1
        upperNum = 6
        roll = 1
        rollsleft = 3
        rollsleft = rollsleft - roll
        If rollsleft = 0 Then
            cmdPlayer1Roll.Enabled = False
        End If

2.) i have made no progress on figuring out how to make the buttons add the amount of dots the randomized picture in the box has, my teacher, did try to explain that when i wrote the randomize code i included part of it, but as i am a unit ahead of my class she had no time to explain it to me.

Thanks for any of the help i will get, it is very much appreciated.

[iam_clint]

Store the amount of rolls in a public variable. In your attempt to limit it you are resetting it to 3 every time you click the button.. and in your random dice function it would look cleaner using select case instead of a bunch of if statements. Instead of repeating the randomize code 5 times. Turn it into a function and call the function 5 times each one passing the control to change.

[Taylor]

Thanks for the tip on the randomize code. Though how do i store the amount of rolls as a public variable?

[iam_clint]

Declare it outside of any function. Generally at the top of the code but still inside the class.