Help with filtered query

[Guyfox]

I've a special request with the following db schema : Relations are one to many from left to right below.

CUSTOMER	SCENARIO	FILE	LINESOFFILE
id	id	id	id
name	name	name	line1
	customer_id	dateupload	line2
		scenario_id	file_id

My problems are :

When i select a customer in my chart i would like to display the count of line1 which contain exact string= "String" of the latest file[dateupload].

I think i have to do some calculated column , or special mesure , but cannot find a solution for the moment .

For the moment , when i select a customer , i only have the count of all the lines of all the files.

I think , i have to add column to FILE table, with countofline1 , countofline2 ?

Any help or advise would be helpful .

Thanks in advance .

[lbendlin]

Please provide sanitized sample data that fully covers your issue. I cannot help you without usable sample data.
Please paste the data into a table in your post or use one of the file services like OneDrive or Google Drive. I cannot use screenshots of your source data.
Please show the expected outcome based on the sample data you provided. Screenshots of the expected outcome are ok.

https://community.powerbi.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447523