Los Angeles (CNN) -- Michael Jackson's ex-wife Debbie Rowe is set to testify in the AEG Live wrongful death trial Wednesday, lawyers for the concert promoter said Monday. Rowe is expected to be questioned about Jackson's drug use during the 1990s when she traveled with him, married him and bore his two oldest children. She will be called as the next witness in the Los Angeles courtroom after an economics expert concludes his testimony aboutÂ the financial support Jackson would have provided his mother and threeÂ childrenÂ had he not died four years ago. Jackson's youngest brother made an unsuccessful effort to reach the singer in his last weeks because of family concerns about his drug use, according to testimony Friday.
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NEW: Debbie Rowe is expected to be questioned about Jackson's drug use during the 1990s
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The concert promoter is using Randy Jackson's testimony in the wrongful death trial
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AEG Live lawyers say Jackson was a secretive drug addict even beyond his family's help
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His brother would "kind of hide from me," Randy Jackson testifies
While @placeholder was questioned for several hours by AEG Live lawyers, only about an hour of the video was shown to jurors Friday.
Randy Jackson gave new insight into what happened that infamous day of the trial when @placeholder showed up late for court wearing pajamas.