# Second condition looks back to first

#### Taylor

##### New member
So I'm relatively new to all this and I've been combing the threads looking to see if I can find something related with no success, maybe it's what I'm searching for or I've missed it somehow. What I'm trying to come up with is a way to set up a study that would look to see is when a condition is met the first time and the difference in a separate parameter the second time that condition is met. An example let's say is that a condition I have is that I want to plot an arrow, this arrow would be triggered if the 20sma crosses above the 50 sma, but only if the close is greater than the last time that the 20sma crossed the 50 sma based on the timeframe of the chart I am currently on. I don't fully understand the lookback feature which is what I'm guessing I may need to use. I'd be happy to review and learn from any previous post if directed there, thank you in advance.

Solution
So I'm relatively new to all this and I've been combing the threads looking to see if I can find something related with no success, maybe it's what I'm searching for or I've missed it somehow. What I'm trying to come up with is a way to set up a study that would look to see is when a condition is met the first time and the difference in a separate parameter the second time that condition is met. An example let's say is that a condition I have is that I want to plot an arrow, this arrow would be triggered if the 20sma crosses above the 50 sma, but only if the close is greater than the last time that the 20sma crossed the 50 sma based on the timeframe of the chart I am currently on. I don't fully understand the lookback feature which...
So I'm relatively new to all this and I've been combing the threads looking to see if I can find something related with no success, maybe it's what I'm searching for or I've missed it somehow. What I'm trying to come up with is a way to set up a study that would look to see is when a condition is met the first time and the difference in a separate parameter the second time that condition is met. An example let's say is that a condition I have is that I want to plot an arrow, this arrow would be triggered if the 20sma crosses above the 50 sma, but only if the close is greater than the last time that the 20sma crossed the 50 sma based on the timeframe of the chart I am currently on. I don't fully understand the lookback feature which is what I'm guessing I may need to use. I'd be happy to review and learn from any previous post if directed there, thank you in advance.
Here is one way to code your example.

Ruby:
``````plot sma1  = Average(close, 20);
plot sma2  = Average(close, 50);
def cond1  = sma1 crosses above sma2;
def close1 = if cond1 then close else close1[1];
plot cond2 = if cond1 and close > close1[1] then 1 else 0;
cond2.SetPaintingStrategy(PaintingStrategy.BOOLEAN_ARROW_UP);
input debug = yes;
AddChartBubble(debug and cond1, high, close1, Color.WHITE);``````

Here is one way to code your example.
Thank you SleepyZ, would this logic be applicable to other indicators besides the sma like the MACD or RSI for example?

87k+ Posts
251 Online

## The Market Trading Game Changer

Join 2,500+ subscribers inside the useThinkScript VIP Membership Club
• Exclusive indicators
• Proven strategies & setups
• Private Discord community
• Exclusive members-only content
• 1 full year of unlimited support

What is useThinkScript?

useThinkScript is the #1 community of stock market investors using indicators and other tools to power their trading strategies. Traders of all skill levels use our forums to learn about scripting and indicators, help each other, and discover new ways to gain an edge in the markets.

How do I get started?

We get it. Our forum can be intimidating, if not overwhelming. With thousands of topics, tens of thousands of posts, our community has created an incredibly deep knowledge base for stock traders. No one can ever exhaust every resource provided on our site.

If you are new, or just looking for guidance, here are some helpful links to get you started.

What are the benefits of VIP Membership?