Android Question Problem sending text to server in trage sdk higher than 26

Hi,
when I put the trage sdk from the manifest to more than 26, I can not send anything to the server via httpjob with the poststring.
I also added the following code to the manifest but it did not work:
B4X:
SetApplicationAttribute(android:usesCleartextTraffic, "true")
What is the solution to this problem? please guide me.
 
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